feat(grpc): implement gRPC services for game context management and move handling

.codesight/CODESIGHT.md

@@ -2,8 +2,8 @@
 
 > **Stack:** raw-http | none | unknown | scala
 
-> 0 routes | 0 models | 0 components | 107 lib files | 1 env vars | 1 middleware
-> **Token savings:** this file is ~7,200 tokens. Without it, AI exploration would cost ~37,300 tokens. **Saves ~30,100 tokens per conversation.**
+> 0 routes | 0 models | 0 components | 159 lib files | 1 env vars | 1 middleware
+> **Token savings:** this file is ~0 tokens. Without it, AI exploration would cost ~0 tokens. **Saves ~0 tokens per conversation.**
 
 ---
 
@@ -25,11 +25,13 @@
   - function main: () -> None
   - class TestCase
   - _...2 more_
+- `modules/account/src/main/scala/de/nowchess/account/client/CoreGameClient.scala` — class CoreGameClient, function createGame
 - `modules/account/src/main/scala/de/nowchess/account/config/JacksonConfig.scala` — class JacksonConfig, function customize
 - `modules/account/src/main/scala/de/nowchess/account/config/NativeReflectionConfig.scala` — class NativeReflectionConfig
 - `modules/account/src/main/scala/de/nowchess/account/domain/Account.scala` — class Account
 - `modules/account/src/main/scala/de/nowchess/account/domain/Challenge.scala`
   - class Challenge
+  - function gameIdOpt
   - function declineReasonOpt
   - function timeControlLimitOpt
   - function timeControlIncrementOpt
@@ -81,6 +83,48 @@
   - function cancel
   - function listForUser
   - _...1 more_
+- `modules/api/bin/scoverage/de/nowchess/api/board/Board.scala`
+  - class Board
+  - function apply
+  - function pieceAt
+  - function updated
+  - function removed
+  - function withMove
+  - _...2 more_
+- `modules/api/bin/scoverage/de/nowchess/api/board/CastlingRights.scala`
+  - function hasAnyRights
+  - function hasRights
+  - function revokeColor
+  - function revokeKingSide
+  - function revokeQueenSide
+  - class CastlingRights
+- `modules/api/bin/scoverage/de/nowchess/api/board/Color.scala` — function opposite, function label
+- `modules/api/bin/scoverage/de/nowchess/api/board/Piece.scala` — class Piece
+- `modules/api/bin/scoverage/de/nowchess/api/board/PieceType.scala` — function label
+- `modules/api/bin/scoverage/de/nowchess/api/board/Square.scala`
+  - class Square
+  - function fromAlgebraic
+  - function offset
+- `modules/api/bin/scoverage/de/nowchess/api/bot/Bot.scala`
+  - class Bot
+  - function name
+  - function nextMove
+- `modules/api/bin/scoverage/de/nowchess/api/dto/ErrorEventDto.scala` — class ErrorEventDto, function apply
+- `modules/api/bin/scoverage/de/nowchess/api/dto/GameFullEventDto.scala` — class GameFullEventDto, function apply
+- `modules/api/bin/scoverage/de/nowchess/api/dto/GameStateEventDto.scala` — class GameStateEventDto, function apply
+- `modules/api/bin/scoverage/de/nowchess/api/game/GameContext.scala`
+  - function kingSquare
+  - function withBoard
+  - function withTurn
+  - function withCastlingRights
+  - function withEnPassantSquare
+  - function withHalfMoveClock
+  - _...4 more_
+- `modules/api/bin/scoverage/de/nowchess/api/player/PlayerInfo.scala` — class PlayerId, function apply
+- `modules/api/bin/scoverage/de/nowchess/api/response/ApiResponse.scala`
+  - class ApiResponse
+  - function error
+  - function totalPages
 - `modules/api/src/main/scala/de/nowchess/api/board/Board.scala`
   - class Board
   - function apply
@@ -142,6 +186,75 @@
   - function isCheck
   - function isCheckmate
   - _...5 more_
+- `modules/bot/bin/scoverage/de/nowchess/bot/BotController.scala`
+  - class BotController
+  - function getBot
+  - function listBots
+- `modules/bot/bin/scoverage/de/nowchess/bot/BotMoveRepetition.scala`
+  - class BotMoveRepetition
+  - function blockedMoves
+  - function repeatedMove
+  - function filterAllowed
+- `modules/bot/bin/scoverage/de/nowchess/bot/Config.scala` — class Config
+- `modules/bot/bin/scoverage/de/nowchess/bot/ai/Evaluation.scala`
+  - class Evaluation
+  - class CHECKMATE_SCORE
+  - class DRAW_SCORE
+  - function evaluate
+  - function initAccumulator
+  - function copyAccumulator
+  - _...2 more_
+- `modules/bot/bin/scoverage/de/nowchess/bot/bots/classic/EvaluationClassic.scala`
+  - class EvaluationClassic
+  - function evaluate
+  - function countRay
+- `modules/bot/bin/scoverage/de/nowchess/bot/bots/nnue/EvaluationNNUE.scala` — class EvaluationNNUE, function evaluate
+- `modules/bot/bin/scoverage/de/nowchess/bot/bots/nnue/NNUE.scala`
+  - class NNUE
+  - function initAccumulator
+  - function pushAccumulator
+  - function copyAccumulator
+  - function recomputeAccumulator
+  - function validateAccumulator
+  - _...4 more_
+- `modules/bot/bin/scoverage/de/nowchess/bot/bots/nnue/NbaiLoader.scala`
+  - class NbaiLoader
+  - function load
+  - function loadDefault
+- `modules/bot/bin/scoverage/de/nowchess/bot/bots/nnue/NbaiMigrator.scala` — class NbaiMigrator, function migrateFromBin
+- `modules/bot/bin/scoverage/de/nowchess/bot/bots/nnue/NbaiModel.scala`
+  - function toJson
+  - class NbaiMetadata
+  - function fromJson
+  - function str
+  - function num
+- `modules/bot/bin/scoverage/de/nowchess/bot/bots/nnue/NbaiWriter.scala` — class NbaiWriter, function write
+- `modules/bot/bin/scoverage/de/nowchess/bot/logic/AlphaBetaSearch.scala`
+  - function bestMove
+  - function bestMove
+  - function bestMoveWithTime
+  - function bestMoveWithTime
+  - function loop
+  - function loop
+- `modules/bot/bin/scoverage/de/nowchess/bot/logic/MoveOrdering.scala`
+  - class MoveOrdering
+  - class OrderingContext
+  - function addKillerMove
+  - function getKillerMoves
+  - function addHistory
+  - function getHistory
+  - _...3 more_
+- `modules/bot/bin/scoverage/de/nowchess/bot/logic/TranspositionTable.scala`
+  - function advance
+  - function probe
+  - function store
+  - function clear
+- `modules/bot/bin/scoverage/de/nowchess/bot/util/PolyglotBook.scala` — function probe, function select
+- `modules/bot/bin/scoverage/de/nowchess/bot/util/PolyglotHash.scala` — class PolyglotHash, function hash
+- `modules/bot/bin/scoverage/de/nowchess/bot/util/ZobristHash.scala`
+  - class ZobristHash
+  - function hash
+  - function nextHash
 - `modules/bot/python/nnue.py`
   - function get_weights_dir: ()
   - function get_data_dir: ()
@@ -246,6 +359,63 @@
   - class ZobristHash
   - function hash
   - function nextHash
+- `modules/core/bin/scoverage/de/nowchess/chess/command/Command.scala`
+  - class Command
+  - function execute
+  - function undo
+  - function description
+  - class MoveResult
+- `modules/core/bin/scoverage/de/nowchess/chess/command/CommandInvoker.scala`
+  - class CommandInvoker
+  - function execute
+  - function undo
+  - function redo
+  - function history
+  - function getCurrentIndex
+  - _...3 more_
+- `modules/core/bin/scoverage/de/nowchess/chess/config/JacksonConfig.scala` — class JacksonConfig, function customize
+- `modules/core/bin/scoverage/de/nowchess/chess/controller/Parser.scala` — class Parser, function parseMove
+- `modules/core/bin/scoverage/de/nowchess/chess/engine/GameEngine.scala`
+  - class GameEngine
+  - function board
+  - function turn
+  - function context
+  - function pendingDrawOfferBy
+  - function canUndo
+  - _...17 more_
+- `modules/core/bin/scoverage/de/nowchess/chess/exception/ApiException.scala`
+  - class ApiException
+  - class GameNotFoundException
+  - class BadRequestException
+- `modules/core/bin/scoverage/de/nowchess/chess/exception/ApiExceptionMapper.scala` — class ApiExceptionMapper, function toResponse
+- `modules/core/bin/scoverage/de/nowchess/chess/observer/Observer.scala`
+  - function context
+  - class Observer
+  - function onGameEvent
+  - class Observable
+  - function subscribe
+  - function unsubscribe
+  - _...1 more_
+- `modules/core/bin/scoverage/de/nowchess/chess/registry/GameRegistry.scala`
+  - class GameRegistry
+  - function store
+  - function get
+  - function update
+  - function generateId
+- `modules/core/bin/scoverage/de/nowchess/chess/registry/GameRegistryImpl.scala`
+  - class GameRegistryImpl
+  - function store
+  - function get
+  - function update
+  - function generateId
+- `modules/core/bin/scoverage/de/nowchess/chess/resource/GameResource.scala`
+  - class GameResource
+  - function onGameEvent
+  - function createGame
+  - function getGame
+  - function streamGame
+  - function onGameEvent
+  - _...10 more_
 - `modules/core/src/main/scala/de/nowchess/chess/adapter/RuleSetRestAdapter.scala`
   - class RuleSetRestAdapter
   - function candidateMoves
@@ -284,8 +454,6 @@
   - _...3 more_
 - `modules/core/src/main/scala/de/nowchess/chess/config/JacksonConfig.scala` — class JacksonConfig, function customize
 - `modules/core/src/main/scala/de/nowchess/chess/config/NativeReflectionConfig.scala` — class NativeReflectionConfig
-- `modules/core/src/main/scala/de/nowchess/chess/config/SquareKeyDeserializer.scala` — class SquareKeyDeserializer
-- `modules/core/src/main/scala/de/nowchess/chess/config/SquareKeySerializer.scala` — class SquareKeySerializer
 - `modules/core/src/main/scala/de/nowchess/chess/controller/Parser.scala` — class Parser, function parseMove
 - `modules/core/src/main/scala/de/nowchess/chess/engine/GameEngine.scala`
   - class GameEngine
@@ -300,10 +468,6 @@
   - class GameNotFoundException
   - class BadRequestException
 - `modules/core/src/main/scala/de/nowchess/chess/exception/ApiExceptionMapper.scala` — class ApiExceptionMapper, function toResponse
-- `modules/core/src/main/scala/de/nowchess/chess/json/MoveTypeDeserializer.scala` — class MoveTypeDeserializer
-- `modules/core/src/main/scala/de/nowchess/chess/json/MoveTypeSerializer.scala` — class MoveTypeSerializer
-- `modules/core/src/main/scala/de/nowchess/chess/json/SquareDeserializer.scala` — class SquareDeserializer
-- `modules/core/src/main/scala/de/nowchess/chess/json/SquareSerializer.scala` — class SquareSerializer
 - `modules/core/src/main/scala/de/nowchess/chess/observer/Observer.scala`
   - function context
   - class Observer
@@ -329,9 +493,56 @@
   - function onGameEvent
   - function createGame
   - function getGame
-  - function streamGame
+  - function resignGame
+  - function makeMove
+  - _...8 more_
+- `modules/core/src/main/scala/de/nowchess/chess/resource/GameWebSocketResource.scala`
+  - class GameWebSocketResource
+  - function onOpen
   - function onGameEvent
-  - _...10 more_
+  - function onClose
+- `modules/io/bin/scoverage/de/nowchess/io/GameContextExport.scala` — class GameContextExport, function exportGameContext
+- `modules/io/bin/scoverage/de/nowchess/io/GameContextImport.scala` — class GameContextImport, function importGameContext
+- `modules/io/bin/scoverage/de/nowchess/io/GameFileService.scala`
+  - class GameFileService
+  - function saveGameToFile
+  - function loadGameFromFile
+  - class FileSystemGameService
+  - function saveGameToFile
+  - function loadGameFromFile
+- `modules/io/bin/scoverage/de/nowchess/io/fen/FenExporter.scala`
+  - class FenExporter
+  - function boardToFen
+  - function gameContextToFen
+  - function exportGameContext
+- `modules/io/bin/scoverage/de/nowchess/io/fen/FenParser.scala`
+  - class FenParser
+  - function parseFen
+  - function importGameContext
+  - function parseBoard
+- `modules/io/bin/scoverage/de/nowchess/io/fen/FenParserCombinators.scala`
+  - class FenParserCombinators
+  - function parseFen
+  - function parseBoard
+  - function importGameContext
+- `modules/io/bin/scoverage/de/nowchess/io/fen/FenParserFastParse.scala`
+  - class FenParserFastParse
+  - function parseFen
+  - function parseBoard
+  - function importGameContext
+- `modules/io/bin/scoverage/de/nowchess/io/fen/FenParserSupport.scala` — function buildSquares
+- `modules/io/bin/scoverage/de/nowchess/io/json/JsonExporter.scala` — class JsonExporter, function exportGameContext
+- `modules/io/bin/scoverage/de/nowchess/io/json/JsonParser.scala` — class JsonParser, function importGameContext
+- `modules/io/bin/scoverage/de/nowchess/io/pgn/PgnExporter.scala`
+  - class PgnExporter
+  - function exportGameContext
+  - function exportGame
+- `modules/io/bin/scoverage/de/nowchess/io/pgn/PgnParser.scala`
+  - class PgnParser
+  - function validatePgn
+  - function importGameContext
+  - function parsePgn
+  - function parseAlgebraicMove
 - `modules/io/src/main/scala/de/nowchess/io/GameFileService.scala`
   - class GameFileService
   - function saveGameToFile
@@ -362,8 +573,6 @@
 - `modules/io/src/main/scala/de/nowchess/io/fen/FenParserSupport.scala` — function buildSquares
 - `modules/io/src/main/scala/de/nowchess/io/json/JsonExporter.scala` — class JsonExporter, function exportGameContext
 - `modules/io/src/main/scala/de/nowchess/io/json/JsonParser.scala` — class JsonParser, function importGameContext
-- `modules/io/src/main/scala/de/nowchess/io/json/SquareKeyDeserializer.scala` — class SquareKeyDeserializer
-- `modules/io/src/main/scala/de/nowchess/io/json/SquareKeySerializer.scala` — class SquareKeySerializer
 - `modules/io/src/main/scala/de/nowchess/io/pgn/PgnExporter.scala`
   - class PgnExporter
   - function exportGameContext
@@ -382,14 +591,31 @@
   - function importPgn
   - function exportFen
   - function exportPgn
+- `modules/json/src/main/scala/de/nowchess/json/ChessJacksonModule.scala` — class ChessJacksonModule
+- `modules/json/src/main/scala/de/nowchess/json/GameResultDeserializer.scala` — class GameResultDeserializer
+- `modules/json/src/main/scala/de/nowchess/json/GameResultSerializer.scala` — class GameResultSerializer
+- `modules/json/src/main/scala/de/nowchess/json/MoveTypeDeserializer.scala` — class MoveTypeDeserializer
+- `modules/json/src/main/scala/de/nowchess/json/MoveTypeSerializer.scala` — class MoveTypeSerializer
+- `modules/json/src/main/scala/de/nowchess/json/SquareDeserializer.scala` — class SquareDeserializer
+- `modules/json/src/main/scala/de/nowchess/json/SquareKeyDeserializer.scala` — class SquareKeyDeserializer
+- `modules/json/src/main/scala/de/nowchess/json/SquareKeySerializer.scala` — class SquareKeySerializer
+- `modules/json/src/main/scala/de/nowchess/json/SquareSerializer.scala` — class SquareSerializer
+- `modules/rule/bin/scoverage/de/nowchess/rules/RuleSet.scala`
+  - class RuleSet
+  - function candidateMoves
+  - function legalMoves
+  - function allLegalMoves
+  - function isCheck
+  - function isCheckmate
+  - _...5 more_
+- `modules/rule/bin/scoverage/de/nowchess/rules/sets/DefaultRules.scala`
+  - class DefaultRules
+  - function positionOf
+  - function loop
+  - function toMoves
+  - function loop
 - `modules/rule/src/main/scala/de/nowchess/rules/config/JacksonConfig.scala` — class JacksonConfig, function customize
 - `modules/rule/src/main/scala/de/nowchess/rules/config/NativeReflectionConfig.scala` — class NativeReflectionConfig
-- `modules/rule/src/main/scala/de/nowchess/rules/json/MoveTypeDeserializer.scala` — class MoveTypeDeserializer
-- `modules/rule/src/main/scala/de/nowchess/rules/json/MoveTypeSerializer.scala` — class MoveTypeSerializer
-- `modules/rule/src/main/scala/de/nowchess/rules/json/SquareDeserializer.scala` — class SquareDeserializer
-- `modules/rule/src/main/scala/de/nowchess/rules/json/SquareKeyDeserializer.scala` — class SquareKeyDeserializer
-- `modules/rule/src/main/scala/de/nowchess/rules/json/SquareKeySerializer.scala` — class SquareKeySerializer
-- `modules/rule/src/main/scala/de/nowchess/rules/json/SquareSerializer.scala` — class SquareSerializer
 - `modules/rule/src/main/scala/de/nowchess/rules/resource/RuleSetResource.scala`
   - class RuleSetResource
   - function candidateMoves
@@ -398,12 +624,7 @@
   - function isCheck
   - function isCheckmate
   - _...5 more_
-- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala`
-  - class DefaultRules
-  - function positionOf
-  - function loop
-  - function toMoves
-  - function loop
+- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala` — class DefaultRules, function positionOf
 
 ---
 
@@ -426,39 +647,39 @@
 
 ## Most Imported Files (change these carefully)
 
-- `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala` — imported by **74** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Square.scala` — imported by **66** files
-- `modules/api/src/main/scala/de/nowchess/api/move/Move.scala` — imported by **52** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Color.scala` — imported by **42** files
-- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala` — imported by **27** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Piece.scala` — imported by **21** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Board.scala` — imported by **20** files
-- `modules/api/src/main/scala/de/nowchess/api/board/PieceType.scala` — imported by **20** files
-- `modules/api/src/main/scala/de/nowchess/api/board/CastlingRights.scala` — imported by **13** files
-- `modules/api/src/main/scala/de/nowchess/api/game/DrawReason.scala` — imported by **12** files
-- `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala` — imported by **12** files
-- `modules/api/src/main/scala/de/nowchess/api/game/GameResult.scala` — imported by **10** files
-- `modules/io/src/main/scala/de/nowchess/io/fen/FenParser.scala` — imported by **10** files
-- `modules/api/src/main/scala/de/nowchess/api/error/GameError.scala` — imported by **9** files
-- `modules/api/src/main/scala/de/nowchess/api/io/GameContextImport.scala` — imported by **8** files
-- `modules/api/src/main/scala/de/nowchess/api/player/PlayerInfo.scala` — imported by **7** files
-- `modules/core/src/main/scala/de/nowchess/chess/observer/Observer.scala` — imported by **7** files
-- `modules/api/src/main/scala/de/nowchess/api/bot/Bot.scala` — imported by **6** files
-- `modules/bot/src/main/scala/de/nowchess/bot/ai/Evaluation.scala` — imported by **6** files
-- `modules/api/src/main/scala/de/nowchess/api/io/GameContextExport.scala` — imported by **6** files
+- `modules/api/bin/scoverage/de/nowchess/api/game/GameContext.scala` — imported by **138** files
+- `modules/api/bin/scoverage/de/nowchess/api/board/Square.scala` — imported by **99** files
+- `modules/api/bin/scoverage/de/nowchess/api/move/Move.scala` — imported by **97** files
+- `modules/api/bin/scoverage/de/nowchess/api/board/Color.scala` — imported by **81** files
+- `modules/rule/bin/scoverage/de/nowchess/rules/sets/DefaultRules.scala` — imported by **44** files
+- `modules/api/bin/scoverage/de/nowchess/api/board/Board.scala` — imported by **39** files
+- `modules/api/bin/scoverage/de/nowchess/api/board/Piece.scala` — imported by **39** files
+- `modules/api/bin/scoverage/de/nowchess/api/board/PieceType.scala` — imported by **37** files
+- `modules/api/bin/scoverage/de/nowchess/api/game/DrawReason.scala` — imported by **23** files
+- `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala` — imported by **23** files
+- `modules/api/bin/scoverage/de/nowchess/api/board/CastlingRights.scala` — imported by **22** files
+- `modules/api/bin/scoverage/de/nowchess/api/game/GameResult.scala` — imported by **21** files
+- `modules/io/bin/scoverage/de/nowchess/io/fen/FenParser.scala` — imported by **20** files
+- `modules/api/src/main/scala/de/nowchess/api/io/GameContextImport.scala` — imported by **15** files
+- `modules/api/bin/scoverage/de/nowchess/api/player/PlayerInfo.scala` — imported by **14** files
+- `modules/core/bin/scoverage/de/nowchess/chess/observer/Observer.scala` — imported by **13** files
+- `modules/api/bin/scoverage/de/nowchess/api/bot/Bot.scala` — imported by **12** files
+- `modules/bot/bin/scoverage/de/nowchess/bot/ai/Evaluation.scala` — imported by **12** files
+- `modules/bot/bin/scoverage/de/nowchess/bot/util/PolyglotBook.scala` — imported by **10** files
+- `modules/api/src/main/scala/de/nowchess/api/io/GameContextExport.scala` — imported by **10** files
 
 ## Import Map (who imports what)
 
-- `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala` ← `modules/api/src/main/scala/de/nowchess/api/bot/Bot.scala`, `modules/api/src/main/scala/de/nowchess/api/io/GameContextExport.scala`, `modules/api/src/main/scala/de/nowchess/api/io/GameContextImport.scala`, `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala`, `modules/bot/src/main/scala/de/nowchess/bot/BotMoveRepetition.scala` +69 more
-- `modules/api/src/main/scala/de/nowchess/api/board/Square.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/main/scala/de/nowchess/api/move/Move.scala`, `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/api/src/test/scala/de/nowchess/api/move/MoveTest.scala` +61 more
-- `modules/api/src/main/scala/de/nowchess/api/move/Move.scala` ← `modules/api/src/main/scala/de/nowchess/api/bot/Bot.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala`, `modules/api/src/test/scala/de/nowchess/api/board/BoardTest.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala` +47 more
-- `modules/api/src/main/scala/de/nowchess/api/board/Color.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/ClockState.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameResult.scala`, `modules/api/src/test/scala/de/nowchess/api/game/ClockStateTest.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala` +37 more
-- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala` ← `modules/bot/src/main/scala/de/nowchess/bot/bots/ClassicalBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/HybridBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/NNUEBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/AlphaBetaSearch.scala`, `modules/bot/src/test/scala/de/nowchess/bot/AlphaBetaSearchTest.scala` +22 more
-- `modules/api/src/main/scala/de/nowchess/api/board/Piece.scala` ← `modules/bot/src/main/scala/de/nowchess/bot/bots/nnue/NNUE.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/MoveOrdering.scala`, `modules/bot/src/main/scala/de/nowchess/bot/util/PolyglotHash.scala`, `modules/bot/src/main/scala/de/nowchess/bot/util/ZobristHash.scala`, `modules/bot/src/test/scala/de/nowchess/bot/AlphaBetaSearchTest.scala` +16 more
-- `modules/api/src/main/scala/de/nowchess/api/board/Board.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/nnue/NNUE.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/MoveOrdering.scala`, `modules/bot/src/test/scala/de/nowchess/bot/AlphaBetaSearchTest.scala` +15 more
-- `modules/api/src/main/scala/de/nowchess/api/board/PieceType.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/classic/EvaluationClassic.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/nnue/NNUE.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/AlphaBetaSearch.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/MoveOrdering.scala` +15 more
-- `modules/api/src/main/scala/de/nowchess/api/board/CastlingRights.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/bot/src/test/scala/de/nowchess/bot/ZobristHashTest.scala`, `modules/core/src/main/scala/de/nowchess/chess/config/NativeReflectionConfig.scala`, `modules/core/src/test/scala/de/nowchess/chess/engine/GameEngineWithBotTest.scala` +8 more
-- `modules/api/src/main/scala/de/nowchess/api/game/DrawReason.scala` ← `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/core/src/main/scala/de/nowchess/chess/config/NativeReflectionConfig.scala`, `modules/core/src/main/scala/de/nowchess/chess/engine/GameEngine.scala`, `modules/core/src/main/scala/de/nowchess/chess/observer/Observer.scala`, `modules/core/src/main/scala/de/nowchess/chess/resource/GameResource.scala` +7 more
+- `modules/api/bin/scoverage/de/nowchess/api/game/GameContext.scala` ← `modules/api/bin/scoverage/de/nowchess/api/bot/Bot.scala`, `modules/api/src/main/scala/de/nowchess/api/bot/Bot.scala`, `modules/api/src/main/scala/de/nowchess/api/io/GameContextExport.scala`, `modules/api/src/main/scala/de/nowchess/api/io/GameContextImport.scala`, `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala` +133 more
+- `modules/api/bin/scoverage/de/nowchess/api/board/Square.scala` ← `modules/api/bin/scoverage/de/nowchess/api/game/GameContext.scala`, `modules/api/bin/scoverage/de/nowchess/api/move/Move.scala`, `modules/api/bin/test/de/nowchess/api/game/GameContextTest.scala`, `modules/api/bin/test/de/nowchess/api/move/MoveTest.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala` +94 more
+- `modules/api/bin/scoverage/de/nowchess/api/move/Move.scala` ← `modules/api/bin/scoverage/de/nowchess/api/bot/Bot.scala`, `modules/api/bin/scoverage/de/nowchess/api/game/GameContext.scala`, `modules/api/bin/test/de/nowchess/api/board/BoardTest.scala`, `modules/api/bin/test/de/nowchess/api/game/GameContextTest.scala`, `modules/api/src/main/scala/de/nowchess/api/bot/Bot.scala` +92 more
+- `modules/api/bin/scoverage/de/nowchess/api/board/Color.scala` ← `modules/api/bin/scoverage/de/nowchess/api/game/GameContext.scala`, `modules/api/bin/scoverage/de/nowchess/api/game/GameResult.scala`, `modules/api/bin/test/de/nowchess/api/game/GameContextTest.scala`, `modules/api/src/main/scala/de/nowchess/api/game/ClockState.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala` +76 more
+- `modules/rule/bin/scoverage/de/nowchess/rules/sets/DefaultRules.scala` ← `modules/bot/bin/scoverage/de/nowchess/bot/bots/ClassicalBot.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/bots/HybridBot.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/bots/NNUEBot.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/logic/AlphaBetaSearch.scala`, `modules/bot/bin/test/de/nowchess/bot/AlphaBetaSearchTest.scala` +39 more
+- `modules/api/bin/scoverage/de/nowchess/api/board/Board.scala` ← `modules/api/bin/scoverage/de/nowchess/api/game/GameContext.scala`, `modules/api/bin/test/de/nowchess/api/game/GameContextTest.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/bots/nnue/NNUE.scala` +34 more
+- `modules/api/bin/scoverage/de/nowchess/api/board/Piece.scala` ← `modules/bot/bin/scoverage/de/nowchess/bot/bots/nnue/NNUE.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/logic/MoveOrdering.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/util/PolyglotHash.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/util/ZobristHash.scala`, `modules/bot/bin/test/de/nowchess/bot/AlphaBetaSearchTest.scala` +34 more
+- `modules/api/bin/scoverage/de/nowchess/api/board/PieceType.scala` ← `modules/api/bin/scoverage/de/nowchess/api/game/GameContext.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/bots/classic/EvaluationClassic.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/bots/nnue/NNUE.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/logic/AlphaBetaSearch.scala` +32 more
+- `modules/api/bin/scoverage/de/nowchess/api/game/DrawReason.scala` ← `modules/api/bin/test/de/nowchess/api/game/GameContextTest.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/core/bin/scoverage/de/nowchess/chess/engine/GameEngine.scala`, `modules/core/bin/scoverage/de/nowchess/chess/observer/Observer.scala`, `modules/core/bin/scoverage/de/nowchess/chess/resource/GameResource.scala` +18 more
+- `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala` ← `modules/bot/bin/scoverage/de/nowchess/bot/bots/ClassicalBot.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/bots/HybridBot.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/bots/NNUEBot.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/logic/AlphaBetaSearch.scala`, `modules/bot/bin/test/de/nowchess/bot/AlphaBetaSearchTest.scala` +18 more
 
 ---
 

.codesight/graph.md

@@ -2,36 +2,36 @@
 
 ## Most Imported Files (change these carefully)
 
-- `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala` — imported by **74** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Square.scala` — imported by **66** files
-- `modules/api/src/main/scala/de/nowchess/api/move/Move.scala` — imported by **52** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Color.scala` — imported by **42** files
-- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala` — imported by **27** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Piece.scala` — imported by **21** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Board.scala` — imported by **20** files
-- `modules/api/src/main/scala/de/nowchess/api/board/PieceType.scala` — imported by **20** files
-- `modules/api/src/main/scala/de/nowchess/api/board/CastlingRights.scala` — imported by **13** files
-- `modules/api/src/main/scala/de/nowchess/api/game/DrawReason.scala` — imported by **12** files
-- `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala` — imported by **12** files
-- `modules/api/src/main/scala/de/nowchess/api/game/GameResult.scala` — imported by **10** files
-- `modules/io/src/main/scala/de/nowchess/io/fen/FenParser.scala` — imported by **10** files
-- `modules/api/src/main/scala/de/nowchess/api/error/GameError.scala` — imported by **9** files
-- `modules/api/src/main/scala/de/nowchess/api/io/GameContextImport.scala` — imported by **8** files
-- `modules/api/src/main/scala/de/nowchess/api/player/PlayerInfo.scala` — imported by **7** files
-- `modules/core/src/main/scala/de/nowchess/chess/observer/Observer.scala` — imported by **7** files
-- `modules/api/src/main/scala/de/nowchess/api/bot/Bot.scala` — imported by **6** files
-- `modules/bot/src/main/scala/de/nowchess/bot/ai/Evaluation.scala` — imported by **6** files
-- `modules/api/src/main/scala/de/nowchess/api/io/GameContextExport.scala` — imported by **6** files
+- `modules/api/bin/scoverage/de/nowchess/api/game/GameContext.scala` — imported by **138** files
+- `modules/api/bin/scoverage/de/nowchess/api/board/Square.scala` — imported by **99** files
+- `modules/api/bin/scoverage/de/nowchess/api/move/Move.scala` — imported by **97** files
+- `modules/api/bin/scoverage/de/nowchess/api/board/Color.scala` — imported by **81** files
+- `modules/rule/bin/scoverage/de/nowchess/rules/sets/DefaultRules.scala` — imported by **44** files
+- `modules/api/bin/scoverage/de/nowchess/api/board/Board.scala` — imported by **39** files
+- `modules/api/bin/scoverage/de/nowchess/api/board/Piece.scala` — imported by **39** files
+- `modules/api/bin/scoverage/de/nowchess/api/board/PieceType.scala` — imported by **37** files
+- `modules/api/bin/scoverage/de/nowchess/api/game/DrawReason.scala` — imported by **23** files
+- `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala` — imported by **23** files
+- `modules/api/bin/scoverage/de/nowchess/api/board/CastlingRights.scala` — imported by **22** files
+- `modules/api/bin/scoverage/de/nowchess/api/game/GameResult.scala` — imported by **21** files
+- `modules/io/bin/scoverage/de/nowchess/io/fen/FenParser.scala` — imported by **20** files
+- `modules/api/src/main/scala/de/nowchess/api/io/GameContextImport.scala` — imported by **15** files
+- `modules/api/bin/scoverage/de/nowchess/api/player/PlayerInfo.scala` — imported by **14** files
+- `modules/core/bin/scoverage/de/nowchess/chess/observer/Observer.scala` — imported by **13** files
+- `modules/api/bin/scoverage/de/nowchess/api/bot/Bot.scala` — imported by **12** files
+- `modules/bot/bin/scoverage/de/nowchess/bot/ai/Evaluation.scala` — imported by **12** files
+- `modules/bot/bin/scoverage/de/nowchess/bot/util/PolyglotBook.scala` — imported by **10** files
+- `modules/api/src/main/scala/de/nowchess/api/io/GameContextExport.scala` — imported by **10** files
 
 ## Import Map (who imports what)
 
-- `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala` ← `modules/api/src/main/scala/de/nowchess/api/bot/Bot.scala`, `modules/api/src/main/scala/de/nowchess/api/io/GameContextExport.scala`, `modules/api/src/main/scala/de/nowchess/api/io/GameContextImport.scala`, `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala`, `modules/bot/src/main/scala/de/nowchess/bot/BotMoveRepetition.scala` +69 more
-- `modules/api/src/main/scala/de/nowchess/api/board/Square.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/main/scala/de/nowchess/api/move/Move.scala`, `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/api/src/test/scala/de/nowchess/api/move/MoveTest.scala` +61 more
-- `modules/api/src/main/scala/de/nowchess/api/move/Move.scala` ← `modules/api/src/main/scala/de/nowchess/api/bot/Bot.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala`, `modules/api/src/test/scala/de/nowchess/api/board/BoardTest.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala` +47 more
-- `modules/api/src/main/scala/de/nowchess/api/board/Color.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/ClockState.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameResult.scala`, `modules/api/src/test/scala/de/nowchess/api/game/ClockStateTest.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala` +37 more
-- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala` ← `modules/bot/src/main/scala/de/nowchess/bot/bots/ClassicalBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/HybridBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/NNUEBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/AlphaBetaSearch.scala`, `modules/bot/src/test/scala/de/nowchess/bot/AlphaBetaSearchTest.scala` +22 more
-- `modules/api/src/main/scala/de/nowchess/api/board/Piece.scala` ← `modules/bot/src/main/scala/de/nowchess/bot/bots/nnue/NNUE.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/MoveOrdering.scala`, `modules/bot/src/main/scala/de/nowchess/bot/util/PolyglotHash.scala`, `modules/bot/src/main/scala/de/nowchess/bot/util/ZobristHash.scala`, `modules/bot/src/test/scala/de/nowchess/bot/AlphaBetaSearchTest.scala` +16 more
-- `modules/api/src/main/scala/de/nowchess/api/board/Board.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/nnue/NNUE.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/MoveOrdering.scala`, `modules/bot/src/test/scala/de/nowchess/bot/AlphaBetaSearchTest.scala` +15 more
-- `modules/api/src/main/scala/de/nowchess/api/board/PieceType.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/classic/EvaluationClassic.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/nnue/NNUE.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/AlphaBetaSearch.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/MoveOrdering.scala` +15 more
-- `modules/api/src/main/scala/de/nowchess/api/board/CastlingRights.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/bot/src/test/scala/de/nowchess/bot/ZobristHashTest.scala`, `modules/core/src/main/scala/de/nowchess/chess/config/NativeReflectionConfig.scala`, `modules/core/src/test/scala/de/nowchess/chess/engine/GameEngineWithBotTest.scala` +8 more
-- `modules/api/src/main/scala/de/nowchess/api/game/DrawReason.scala` ← `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/core/src/main/scala/de/nowchess/chess/config/NativeReflectionConfig.scala`, `modules/core/src/main/scala/de/nowchess/chess/engine/GameEngine.scala`, `modules/core/src/main/scala/de/nowchess/chess/observer/Observer.scala`, `modules/core/src/main/scala/de/nowchess/chess/resource/GameResource.scala` +7 more
+- `modules/api/bin/scoverage/de/nowchess/api/game/GameContext.scala` ← `modules/api/bin/scoverage/de/nowchess/api/bot/Bot.scala`, `modules/api/src/main/scala/de/nowchess/api/bot/Bot.scala`, `modules/api/src/main/scala/de/nowchess/api/io/GameContextExport.scala`, `modules/api/src/main/scala/de/nowchess/api/io/GameContextImport.scala`, `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala` +133 more
+- `modules/api/bin/scoverage/de/nowchess/api/board/Square.scala` ← `modules/api/bin/scoverage/de/nowchess/api/game/GameContext.scala`, `modules/api/bin/scoverage/de/nowchess/api/move/Move.scala`, `modules/api/bin/test/de/nowchess/api/game/GameContextTest.scala`, `modules/api/bin/test/de/nowchess/api/move/MoveTest.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala` +94 more
+- `modules/api/bin/scoverage/de/nowchess/api/move/Move.scala` ← `modules/api/bin/scoverage/de/nowchess/api/bot/Bot.scala`, `modules/api/bin/scoverage/de/nowchess/api/game/GameContext.scala`, `modules/api/bin/test/de/nowchess/api/board/BoardTest.scala`, `modules/api/bin/test/de/nowchess/api/game/GameContextTest.scala`, `modules/api/src/main/scala/de/nowchess/api/bot/Bot.scala` +92 more
+- `modules/api/bin/scoverage/de/nowchess/api/board/Color.scala` ← `modules/api/bin/scoverage/de/nowchess/api/game/GameContext.scala`, `modules/api/bin/scoverage/de/nowchess/api/game/GameResult.scala`, `modules/api/bin/test/de/nowchess/api/game/GameContextTest.scala`, `modules/api/src/main/scala/de/nowchess/api/game/ClockState.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala` +76 more
+- `modules/rule/bin/scoverage/de/nowchess/rules/sets/DefaultRules.scala` ← `modules/bot/bin/scoverage/de/nowchess/bot/bots/ClassicalBot.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/bots/HybridBot.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/bots/NNUEBot.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/logic/AlphaBetaSearch.scala`, `modules/bot/bin/test/de/nowchess/bot/AlphaBetaSearchTest.scala` +39 more
+- `modules/api/bin/scoverage/de/nowchess/api/board/Board.scala` ← `modules/api/bin/scoverage/de/nowchess/api/game/GameContext.scala`, `modules/api/bin/test/de/nowchess/api/game/GameContextTest.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/bots/nnue/NNUE.scala` +34 more
+- `modules/api/bin/scoverage/de/nowchess/api/board/Piece.scala` ← `modules/bot/bin/scoverage/de/nowchess/bot/bots/nnue/NNUE.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/logic/MoveOrdering.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/util/PolyglotHash.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/util/ZobristHash.scala`, `modules/bot/bin/test/de/nowchess/bot/AlphaBetaSearchTest.scala` +34 more
+- `modules/api/bin/scoverage/de/nowchess/api/board/PieceType.scala` ← `modules/api/bin/scoverage/de/nowchess/api/game/GameContext.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/bots/classic/EvaluationClassic.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/bots/nnue/NNUE.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/logic/AlphaBetaSearch.scala` +32 more
+- `modules/api/bin/scoverage/de/nowchess/api/game/DrawReason.scala` ← `modules/api/bin/test/de/nowchess/api/game/GameContextTest.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/core/bin/scoverage/de/nowchess/chess/engine/GameEngine.scala`, `modules/core/bin/scoverage/de/nowchess/chess/observer/Observer.scala`, `modules/core/bin/scoverage/de/nowchess/chess/resource/GameResource.scala` +18 more
+- `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala` ← `modules/bot/bin/scoverage/de/nowchess/bot/bots/ClassicalBot.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/bots/HybridBot.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/bots/NNUEBot.scala`, `modules/bot/bin/scoverage/de/nowchess/bot/logic/AlphaBetaSearch.scala`, `modules/bot/bin/test/de/nowchess/bot/AlphaBetaSearchTest.scala` +18 more

.codesight/libs.md

@@ -16,11 +16,13 @@
   - function main: () -> None
   - class TestCase
   - _...2 more_
+- `modules/account/src/main/scala/de/nowchess/account/client/CoreGameClient.scala` — class CoreGameClient, function createGame
 - `modules/account/src/main/scala/de/nowchess/account/config/JacksonConfig.scala` — class JacksonConfig, function customize
 - `modules/account/src/main/scala/de/nowchess/account/config/NativeReflectionConfig.scala` — class NativeReflectionConfig
 - `modules/account/src/main/scala/de/nowchess/account/domain/Account.scala` — class Account
 - `modules/account/src/main/scala/de/nowchess/account/domain/Challenge.scala`
   - class Challenge
+  - function gameIdOpt
   - function declineReasonOpt
   - function timeControlLimitOpt
   - function timeControlIncrementOpt
@@ -72,6 +74,48 @@
   - function cancel
   - function listForUser
   - _...1 more_
+- `modules/api/bin/scoverage/de/nowchess/api/board/Board.scala`
+  - class Board
+  - function apply
+  - function pieceAt
+  - function updated
+  - function removed
+  - function withMove
+  - _...2 more_
+- `modules/api/bin/scoverage/de/nowchess/api/board/CastlingRights.scala`
+  - function hasAnyRights
+  - function hasRights
+  - function revokeColor
+  - function revokeKingSide
+  - function revokeQueenSide
+  - class CastlingRights
+- `modules/api/bin/scoverage/de/nowchess/api/board/Color.scala` — function opposite, function label
+- `modules/api/bin/scoverage/de/nowchess/api/board/Piece.scala` — class Piece
+- `modules/api/bin/scoverage/de/nowchess/api/board/PieceType.scala` — function label
+- `modules/api/bin/scoverage/de/nowchess/api/board/Square.scala`
+  - class Square
+  - function fromAlgebraic
+  - function offset
+- `modules/api/bin/scoverage/de/nowchess/api/bot/Bot.scala`
+  - class Bot
+  - function name
+  - function nextMove
+- `modules/api/bin/scoverage/de/nowchess/api/dto/ErrorEventDto.scala` — class ErrorEventDto, function apply
+- `modules/api/bin/scoverage/de/nowchess/api/dto/GameFullEventDto.scala` — class GameFullEventDto, function apply
+- `modules/api/bin/scoverage/de/nowchess/api/dto/GameStateEventDto.scala` — class GameStateEventDto, function apply
+- `modules/api/bin/scoverage/de/nowchess/api/game/GameContext.scala`
+  - function kingSquare
+  - function withBoard
+  - function withTurn
+  - function withCastlingRights
+  - function withEnPassantSquare
+  - function withHalfMoveClock
+  - _...4 more_
+- `modules/api/bin/scoverage/de/nowchess/api/player/PlayerInfo.scala` — class PlayerId, function apply
+- `modules/api/bin/scoverage/de/nowchess/api/response/ApiResponse.scala`
+  - class ApiResponse
+  - function error
+  - function totalPages
 - `modules/api/src/main/scala/de/nowchess/api/board/Board.scala`
   - class Board
   - function apply
@@ -133,6 +177,75 @@
   - function isCheck
   - function isCheckmate
   - _...5 more_
+- `modules/bot/bin/scoverage/de/nowchess/bot/BotController.scala`
+  - class BotController
+  - function getBot
+  - function listBots
+- `modules/bot/bin/scoverage/de/nowchess/bot/BotMoveRepetition.scala`
+  - class BotMoveRepetition
+  - function blockedMoves
+  - function repeatedMove
+  - function filterAllowed
+- `modules/bot/bin/scoverage/de/nowchess/bot/Config.scala` — class Config
+- `modules/bot/bin/scoverage/de/nowchess/bot/ai/Evaluation.scala`
+  - class Evaluation
+  - class CHECKMATE_SCORE
+  - class DRAW_SCORE
+  - function evaluate
+  - function initAccumulator
+  - function copyAccumulator
+  - _...2 more_
+- `modules/bot/bin/scoverage/de/nowchess/bot/bots/classic/EvaluationClassic.scala`
+  - class EvaluationClassic
+  - function evaluate
+  - function countRay
+- `modules/bot/bin/scoverage/de/nowchess/bot/bots/nnue/EvaluationNNUE.scala` — class EvaluationNNUE, function evaluate
+- `modules/bot/bin/scoverage/de/nowchess/bot/bots/nnue/NNUE.scala`
+  - class NNUE
+  - function initAccumulator
+  - function pushAccumulator
+  - function copyAccumulator
+  - function recomputeAccumulator
+  - function validateAccumulator
+  - _...4 more_
+- `modules/bot/bin/scoverage/de/nowchess/bot/bots/nnue/NbaiLoader.scala`
+  - class NbaiLoader
+  - function load
+  - function loadDefault
+- `modules/bot/bin/scoverage/de/nowchess/bot/bots/nnue/NbaiMigrator.scala` — class NbaiMigrator, function migrateFromBin
+- `modules/bot/bin/scoverage/de/nowchess/bot/bots/nnue/NbaiModel.scala`
+  - function toJson
+  - class NbaiMetadata
+  - function fromJson
+  - function str
+  - function num
+- `modules/bot/bin/scoverage/de/nowchess/bot/bots/nnue/NbaiWriter.scala` — class NbaiWriter, function write
+- `modules/bot/bin/scoverage/de/nowchess/bot/logic/AlphaBetaSearch.scala`
+  - function bestMove
+  - function bestMove
+  - function bestMoveWithTime
+  - function bestMoveWithTime
+  - function loop
+  - function loop
+- `modules/bot/bin/scoverage/de/nowchess/bot/logic/MoveOrdering.scala`
+  - class MoveOrdering
+  - class OrderingContext
+  - function addKillerMove
+  - function getKillerMoves
+  - function addHistory
+  - function getHistory
+  - _...3 more_
+- `modules/bot/bin/scoverage/de/nowchess/bot/logic/TranspositionTable.scala`
+  - function advance
+  - function probe
+  - function store
+  - function clear
+- `modules/bot/bin/scoverage/de/nowchess/bot/util/PolyglotBook.scala` — function probe, function select
+- `modules/bot/bin/scoverage/de/nowchess/bot/util/PolyglotHash.scala` — class PolyglotHash, function hash
+- `modules/bot/bin/scoverage/de/nowchess/bot/util/ZobristHash.scala`
+  - class ZobristHash
+  - function hash
+  - function nextHash
 - `modules/bot/python/nnue.py`
   - function get_weights_dir: ()
   - function get_data_dir: ()
@@ -237,6 +350,63 @@
   - class ZobristHash
   - function hash
   - function nextHash
+- `modules/core/bin/scoverage/de/nowchess/chess/command/Command.scala`
+  - class Command
+  - function execute
+  - function undo
+  - function description
+  - class MoveResult
+- `modules/core/bin/scoverage/de/nowchess/chess/command/CommandInvoker.scala`
+  - class CommandInvoker
+  - function execute
+  - function undo
+  - function redo
+  - function history
+  - function getCurrentIndex
+  - _...3 more_
+- `modules/core/bin/scoverage/de/nowchess/chess/config/JacksonConfig.scala` — class JacksonConfig, function customize
+- `modules/core/bin/scoverage/de/nowchess/chess/controller/Parser.scala` — class Parser, function parseMove
+- `modules/core/bin/scoverage/de/nowchess/chess/engine/GameEngine.scala`
+  - class GameEngine
+  - function board
+  - function turn
+  - function context
+  - function pendingDrawOfferBy
+  - function canUndo
+  - _...17 more_
+- `modules/core/bin/scoverage/de/nowchess/chess/exception/ApiException.scala`
+  - class ApiException
+  - class GameNotFoundException
+  - class BadRequestException
+- `modules/core/bin/scoverage/de/nowchess/chess/exception/ApiExceptionMapper.scala` — class ApiExceptionMapper, function toResponse
+- `modules/core/bin/scoverage/de/nowchess/chess/observer/Observer.scala`
+  - function context
+  - class Observer
+  - function onGameEvent
+  - class Observable
+  - function subscribe
+  - function unsubscribe
+  - _...1 more_
+- `modules/core/bin/scoverage/de/nowchess/chess/registry/GameRegistry.scala`
+  - class GameRegistry
+  - function store
+  - function get
+  - function update
+  - function generateId
+- `modules/core/bin/scoverage/de/nowchess/chess/registry/GameRegistryImpl.scala`
+  - class GameRegistryImpl
+  - function store
+  - function get
+  - function update
+  - function generateId
+- `modules/core/bin/scoverage/de/nowchess/chess/resource/GameResource.scala`
+  - class GameResource
+  - function onGameEvent
+  - function createGame
+  - function getGame
+  - function streamGame
+  - function onGameEvent
+  - _...10 more_
 - `modules/core/src/main/scala/de/nowchess/chess/adapter/RuleSetRestAdapter.scala`
   - class RuleSetRestAdapter
   - function candidateMoves
@@ -275,8 +445,6 @@
   - _...3 more_
 - `modules/core/src/main/scala/de/nowchess/chess/config/JacksonConfig.scala` — class JacksonConfig, function customize
 - `modules/core/src/main/scala/de/nowchess/chess/config/NativeReflectionConfig.scala` — class NativeReflectionConfig
-- `modules/core/src/main/scala/de/nowchess/chess/config/SquareKeyDeserializer.scala` — class SquareKeyDeserializer
-- `modules/core/src/main/scala/de/nowchess/chess/config/SquareKeySerializer.scala` — class SquareKeySerializer
 - `modules/core/src/main/scala/de/nowchess/chess/controller/Parser.scala` — class Parser, function parseMove
 - `modules/core/src/main/scala/de/nowchess/chess/engine/GameEngine.scala`
   - class GameEngine
@@ -291,10 +459,6 @@
   - class GameNotFoundException
   - class BadRequestException
 - `modules/core/src/main/scala/de/nowchess/chess/exception/ApiExceptionMapper.scala` — class ApiExceptionMapper, function toResponse
-- `modules/core/src/main/scala/de/nowchess/chess/json/MoveTypeDeserializer.scala` — class MoveTypeDeserializer
-- `modules/core/src/main/scala/de/nowchess/chess/json/MoveTypeSerializer.scala` — class MoveTypeSerializer
-- `modules/core/src/main/scala/de/nowchess/chess/json/SquareDeserializer.scala` — class SquareDeserializer
-- `modules/core/src/main/scala/de/nowchess/chess/json/SquareSerializer.scala` — class SquareSerializer
 - `modules/core/src/main/scala/de/nowchess/chess/observer/Observer.scala`
   - function context
   - class Observer
@@ -320,9 +484,56 @@
   - function onGameEvent
   - function createGame
   - function getGame
-  - function streamGame
+  - function resignGame
+  - function makeMove
+  - _...8 more_
+- `modules/core/src/main/scala/de/nowchess/chess/resource/GameWebSocketResource.scala`
+  - class GameWebSocketResource
+  - function onOpen
   - function onGameEvent
-  - _...10 more_
+  - function onClose
+- `modules/io/bin/scoverage/de/nowchess/io/GameContextExport.scala` — class GameContextExport, function exportGameContext
+- `modules/io/bin/scoverage/de/nowchess/io/GameContextImport.scala` — class GameContextImport, function importGameContext
+- `modules/io/bin/scoverage/de/nowchess/io/GameFileService.scala`
+  - class GameFileService
+  - function saveGameToFile
+  - function loadGameFromFile
+  - class FileSystemGameService
+  - function saveGameToFile
+  - function loadGameFromFile
+- `modules/io/bin/scoverage/de/nowchess/io/fen/FenExporter.scala`
+  - class FenExporter
+  - function boardToFen
+  - function gameContextToFen
+  - function exportGameContext
+- `modules/io/bin/scoverage/de/nowchess/io/fen/FenParser.scala`
+  - class FenParser
+  - function parseFen
+  - function importGameContext
+  - function parseBoard
+- `modules/io/bin/scoverage/de/nowchess/io/fen/FenParserCombinators.scala`
+  - class FenParserCombinators
+  - function parseFen
+  - function parseBoard
+  - function importGameContext
+- `modules/io/bin/scoverage/de/nowchess/io/fen/FenParserFastParse.scala`
+  - class FenParserFastParse
+  - function parseFen
+  - function parseBoard
+  - function importGameContext
+- `modules/io/bin/scoverage/de/nowchess/io/fen/FenParserSupport.scala` — function buildSquares
+- `modules/io/bin/scoverage/de/nowchess/io/json/JsonExporter.scala` — class JsonExporter, function exportGameContext
+- `modules/io/bin/scoverage/de/nowchess/io/json/JsonParser.scala` — class JsonParser, function importGameContext
+- `modules/io/bin/scoverage/de/nowchess/io/pgn/PgnExporter.scala`
+  - class PgnExporter
+  - function exportGameContext
+  - function exportGame
+- `modules/io/bin/scoverage/de/nowchess/io/pgn/PgnParser.scala`
+  - class PgnParser
+  - function validatePgn
+  - function importGameContext
+  - function parsePgn
+  - function parseAlgebraicMove
 - `modules/io/src/main/scala/de/nowchess/io/GameFileService.scala`
   - class GameFileService
   - function saveGameToFile
@@ -353,8 +564,6 @@
 - `modules/io/src/main/scala/de/nowchess/io/fen/FenParserSupport.scala` — function buildSquares
 - `modules/io/src/main/scala/de/nowchess/io/json/JsonExporter.scala` — class JsonExporter, function exportGameContext
 - `modules/io/src/main/scala/de/nowchess/io/json/JsonParser.scala` — class JsonParser, function importGameContext
-- `modules/io/src/main/scala/de/nowchess/io/json/SquareKeyDeserializer.scala` — class SquareKeyDeserializer
-- `modules/io/src/main/scala/de/nowchess/io/json/SquareKeySerializer.scala` — class SquareKeySerializer
 - `modules/io/src/main/scala/de/nowchess/io/pgn/PgnExporter.scala`
   - class PgnExporter
   - function exportGameContext
@@ -373,14 +582,31 @@
   - function importPgn
   - function exportFen
   - function exportPgn
+- `modules/json/src/main/scala/de/nowchess/json/ChessJacksonModule.scala` — class ChessJacksonModule
+- `modules/json/src/main/scala/de/nowchess/json/GameResultDeserializer.scala` — class GameResultDeserializer
+- `modules/json/src/main/scala/de/nowchess/json/GameResultSerializer.scala` — class GameResultSerializer
+- `modules/json/src/main/scala/de/nowchess/json/MoveTypeDeserializer.scala` — class MoveTypeDeserializer
+- `modules/json/src/main/scala/de/nowchess/json/MoveTypeSerializer.scala` — class MoveTypeSerializer
+- `modules/json/src/main/scala/de/nowchess/json/SquareDeserializer.scala` — class SquareDeserializer
+- `modules/json/src/main/scala/de/nowchess/json/SquareKeyDeserializer.scala` — class SquareKeyDeserializer
+- `modules/json/src/main/scala/de/nowchess/json/SquareKeySerializer.scala` — class SquareKeySerializer
+- `modules/json/src/main/scala/de/nowchess/json/SquareSerializer.scala` — class SquareSerializer
+- `modules/rule/bin/scoverage/de/nowchess/rules/RuleSet.scala`
+  - class RuleSet
+  - function candidateMoves
+  - function legalMoves
+  - function allLegalMoves
+  - function isCheck
+  - function isCheckmate
+  - _...5 more_
+- `modules/rule/bin/scoverage/de/nowchess/rules/sets/DefaultRules.scala`
+  - class DefaultRules
+  - function positionOf
+  - function loop
+  - function toMoves
+  - function loop
 - `modules/rule/src/main/scala/de/nowchess/rules/config/JacksonConfig.scala` — class JacksonConfig, function customize
 - `modules/rule/src/main/scala/de/nowchess/rules/config/NativeReflectionConfig.scala` — class NativeReflectionConfig
-- `modules/rule/src/main/scala/de/nowchess/rules/json/MoveTypeDeserializer.scala` — class MoveTypeDeserializer
-- `modules/rule/src/main/scala/de/nowchess/rules/json/MoveTypeSerializer.scala` — class MoveTypeSerializer
-- `modules/rule/src/main/scala/de/nowchess/rules/json/SquareDeserializer.scala` — class SquareDeserializer
-- `modules/rule/src/main/scala/de/nowchess/rules/json/SquareKeyDeserializer.scala` — class SquareKeyDeserializer
-- `modules/rule/src/main/scala/de/nowchess/rules/json/SquareKeySerializer.scala` — class SquareKeySerializer
-- `modules/rule/src/main/scala/de/nowchess/rules/json/SquareSerializer.scala` — class SquareSerializer
 - `modules/rule/src/main/scala/de/nowchess/rules/resource/RuleSetResource.scala`
   - class RuleSetResource
   - function candidateMoves
@@ -389,9 +615,4 @@
   - function isCheck
   - function isCheckmate
   - _...5 more_
-- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala`
-  - class DefaultRules
-  - function positionOf
-  - function loop
-  - function toMoves
-  - function loop
+- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala` — class DefaultRules, function positionOf

bruno/board/move/02 Get Legal Moves.bru

@@ -15,5 +15,5 @@ params:query {
 }
 
 vars:pre-request {
-  gameId: tjOgyEcS
+  gameId: COy3oigz
 }

modules/account/src/main/resources/application.yml

@@ -22,7 +22,7 @@ quarkus:
     schema-management:
       strategy: drop-and-create
 
-"%live":
+"%deployed":
   quarkus:
     rest-client:
       core-service:

modules/core/build.gradle.kts

@@ -49,6 +49,8 @@ dependencies {
 
     implementation(project(":modules:api"))
     implementation(project(":modules:json"))
+    implementation(project(":modules:rule"))
+    implementation(project(":modules:io"))
     implementation(project(":modules:bot"))
 
 
@@ -57,6 +59,7 @@ dependencies {
     implementation("io.quarkus:quarkus-hibernate-orm")
     implementation("io.quarkus:quarkus-rest-client-jackson")
     implementation("io.quarkus:quarkus-rest-client")
+    implementation("io.quarkus:quarkus-grpc")
     implementation("io.quarkus:quarkus-rest-jackson")
     implementation("io.quarkus:quarkus-config-yaml")
     implementation("io.quarkus:quarkus-smallrye-fault-tolerance")

modules/core/src/main/proto/chess_types.proto

@@ -0,0 +1,87 @@
+syntax = "proto3";
+option java_package = "de.nowchess.core.proto";
+option java_multiple_files = true;
+option java_outer_classname = "ChessTypesProto";
+
+enum ProtoColor {
+  WHITE = 0;
+  BLACK = 1;
+}
+
+enum ProtoPieceType {
+  PAWN   = 0;
+  KNIGHT = 1;
+  BISHOP = 2;
+  ROOK   = 3;
+  QUEEN  = 4;
+  KING   = 5;
+}
+
+enum ProtoMoveKind {
+  QUIET            = 0;
+  CAPTURE          = 1;
+  CASTLE_KINGSIDE  = 2;
+  CASTLE_QUEENSIDE = 3;
+  EN_PASSANT       = 4;
+  PROMO_QUEEN      = 5;
+  PROMO_ROOK       = 6;
+  PROMO_BISHOP     = 7;
+  PROMO_KNIGHT     = 8;
+}
+
+enum ProtoGameResultKind {
+  ONGOING           = 0;
+  WIN_CHECKMATE_W   = 1;
+  WIN_CHECKMATE_B   = 2;
+  WIN_RESIGN_W      = 3;
+  WIN_RESIGN_B      = 4;
+  WIN_TIME_W        = 5;
+  WIN_TIME_B        = 6;
+  DRAW_STALEMATE    = 7;
+  DRAW_INSUFFICIENT = 8;
+  DRAW_FIFTY_MOVE   = 9;
+  DRAW_THREEFOLD    = 10;
+  DRAW_AGREEMENT    = 11;
+}
+
+message ProtoPiece {
+  ProtoColor     color      = 1;
+  ProtoPieceType piece_type = 2;
+}
+
+message ProtoSquarePiece {
+  string     square = 1;
+  ProtoPiece piece  = 2;
+}
+
+message ProtoMove {
+  string        from      = 1;
+  string        to        = 2;
+  ProtoMoveKind move_kind = 3;
+}
+
+message ProtoCastlingRights {
+  bool white_king_side  = 1;
+  bool white_queen_side = 2;
+  bool black_king_side  = 3;
+  bool black_queen_side = 4;
+}
+
+message ProtoGameContext {
+  repeated ProtoSquarePiece board             = 1;
+  ProtoColor                turn              = 2;
+  ProtoCastlingRights       castling_rights   = 3;
+  string                    en_passant_square = 4;
+  int32                     half_move_clock   = 5;
+  repeated ProtoMove        moves             = 6;
+  ProtoGameResultKind       result            = 7;
+  repeated ProtoSquarePiece initial_board     = 8;
+}
+
+message ProtoPostMoveStatus {
+  bool is_checkmate             = 1;
+  bool is_stalemate             = 2;
+  bool is_insufficient_material = 3;
+  bool is_check                 = 4;
+  bool is_threefold_repetition  = 5;
+}

modules/core/src/main/proto/io_service.proto

@@ -0,0 +1,31 @@
+syntax = "proto3";
+option java_package = "de.nowchess.core.proto";
+option java_multiple_files = true;
+option java_outer_classname = "IoServiceProto";
+
+import "chess_types.proto";
+
+message ProtoImportFenRequest {
+  string fen = 1;
+}
+
+message ProtoImportPgnRequest {
+  string pgn = 1;
+}
+
+message ProtoCombinedExport {
+  string fen = 1;
+  string pgn = 2;
+}
+
+message ProtoStringResult {
+  string value = 1;
+}
+
+service IoService {
+  rpc ImportFen      (ProtoImportFenRequest) returns (ProtoGameContext);
+  rpc ImportPgn      (ProtoImportPgnRequest) returns (ProtoGameContext);
+  rpc ExportCombined (ProtoGameContext)      returns (ProtoCombinedExport);
+  rpc ExportFen      (ProtoGameContext)      returns (ProtoStringResult);
+  rpc ExportPgn      (ProtoGameContext)      returns (ProtoStringResult);
+}

modules/core/src/main/proto/rule_service.proto

@@ -0,0 +1,38 @@
+syntax = "proto3";
+option java_package = "de.nowchess.core.proto";
+option java_multiple_files = true;
+option java_outer_classname = "RuleServiceProto";
+
+import "chess_types.proto";
+
+message ProtoSquareRequest {
+  ProtoGameContext context = 1;
+  string           square  = 2;
+}
+
+message ProtoMoveRequest {
+  ProtoGameContext context = 1;
+  ProtoMove        move    = 2;
+}
+
+message ProtoMoveList {
+  repeated ProtoMove moves = 1;
+}
+
+message ProtoBoolResult {
+  bool value = 1;
+}
+
+service RuleService {
+  rpc CandidateMoves         (ProtoSquareRequest) returns (ProtoMoveList);
+  rpc LegalMoves             (ProtoSquareRequest) returns (ProtoMoveList);
+  rpc AllLegalMoves          (ProtoGameContext)   returns (ProtoMoveList);
+  rpc IsCheck                (ProtoGameContext)   returns (ProtoBoolResult);
+  rpc IsCheckmate            (ProtoGameContext)   returns (ProtoBoolResult);
+  rpc IsStalemate            (ProtoGameContext)   returns (ProtoBoolResult);
+  rpc IsInsufficientMaterial (ProtoGameContext)   returns (ProtoBoolResult);
+  rpc IsFiftyMoveRule        (ProtoGameContext)   returns (ProtoBoolResult);
+  rpc IsThreefoldRepetition  (ProtoGameContext)   returns (ProtoBoolResult);
+  rpc ApplyMove              (ProtoMoveRequest)   returns (ProtoGameContext);
+  rpc PostMoveStatus         (ProtoGameContext)   returns (ProtoPostMoveStatus);
+}

modules/core/src/main/resources/application.yml

@@ -3,6 +3,16 @@ quarkus:
     port: 8080
   application:
     name: nowchess-core
+  grpc:
+    clients:
+      rule-grpc:
+        host: localhost
+        port: 8082
+      io-grpc:
+        host: localhost
+        port: 8081
+    server:
+      use-separate-server: false
 
 "%dev":
   mp:
@@ -18,13 +28,21 @@ quarkus:
         origins: http://localhost:4200
         methods: GET,POST,PUT,DELETE,OPTIONS
         headers: Content-Type,Accept,Authorization
+    grpc:
+      clients:
+        rule-grpc:
+          host: localhost
+          port: 8082
+        io-grpc:
+          host: localhost
+          port: 8081
     rest-client:
       io-service:
         url: http://localhost:8081
       rule-service:
         url: http://localhost:8082
 
-"%prod":
+"%deployed":
   mp:
     jwt:
       verify:
@@ -38,6 +56,14 @@ quarkus:
         origins: ${CORS_ORIGINS}
         methods: GET,POST,PUT,DELETE,OPTIONS
         headers: Content-Type,Accept,Authorization
+    grpc:
+      clients:
+        rule-grpc:
+          host: ${RULE_SERVICE_HOST}
+          port: ${RULE_SERVICE_GRPC_PORT:9082}
+        io-grpc:
+          host: ${IO_SERVICE_HOST}
+          port: ${IO_SERVICE_GRPC_PORT:9081}
     rest-client:
       io-service:
         url: ${IO_SERVICE_URL}

modules/core/src/main/scala/de/nowchess/chess/grpc/CoreProtoMapper.scala

@@ -0,0 +1,142 @@
+package de.nowchess.chess.grpc
+
+import de.nowchess.api.board.*
+import de.nowchess.api.board.{CastlingRights as DomainCastlingRights}
+import de.nowchess.api.game.{DrawReason, GameContext, GameResult, WinReason}
+import de.nowchess.api.move.{Move as DomainMove, MoveType, PromotionPiece}
+import de.nowchess.core.proto.*
+
+import scala.jdk.CollectionConverters.*
+
+object CoreProtoMapper:
+
+  def toProtoColor(c: Color): ProtoColor = c match
+    case Color.White => ProtoColor.WHITE
+    case Color.Black => ProtoColor.BLACK
+
+  def fromProtoColor(c: ProtoColor): Color = c match
+    case ProtoColor.WHITE => Color.White
+    case _                => Color.Black
+
+  def toProtoPieceType(pt: PieceType): ProtoPieceType = pt match
+    case PieceType.Pawn   => ProtoPieceType.PAWN
+    case PieceType.Knight => ProtoPieceType.KNIGHT
+    case PieceType.Bishop => ProtoPieceType.BISHOP
+    case PieceType.Rook   => ProtoPieceType.ROOK
+    case PieceType.Queen  => ProtoPieceType.QUEEN
+    case PieceType.King   => ProtoPieceType.KING
+
+  def fromProtoPieceType(pt: ProtoPieceType): PieceType = pt match
+    case ProtoPieceType.PAWN   => PieceType.Pawn
+    case ProtoPieceType.KNIGHT => PieceType.Knight
+    case ProtoPieceType.BISHOP => PieceType.Bishop
+    case ProtoPieceType.ROOK   => PieceType.Rook
+    case ProtoPieceType.QUEEN  => PieceType.Queen
+    case _                     => PieceType.King
+
+  def toProtoMoveKind(mt: MoveType): ProtoMoveKind = mt match
+    case MoveType.Normal(false)                    => ProtoMoveKind.QUIET
+    case MoveType.Normal(true)                     => ProtoMoveKind.CAPTURE
+    case MoveType.CastleKingside                   => ProtoMoveKind.CASTLE_KINGSIDE
+    case MoveType.CastleQueenside                  => ProtoMoveKind.CASTLE_QUEENSIDE
+    case MoveType.EnPassant                        => ProtoMoveKind.EN_PASSANT
+    case MoveType.Promotion(PromotionPiece.Queen)  => ProtoMoveKind.PROMO_QUEEN
+    case MoveType.Promotion(PromotionPiece.Rook)   => ProtoMoveKind.PROMO_ROOK
+    case MoveType.Promotion(PromotionPiece.Bishop) => ProtoMoveKind.PROMO_BISHOP
+    case MoveType.Promotion(PromotionPiece.Knight) => ProtoMoveKind.PROMO_KNIGHT
+
+  def fromProtoMoveKind(k: ProtoMoveKind): MoveType = k match
+    case ProtoMoveKind.QUIET            => MoveType.Normal(false)
+    case ProtoMoveKind.CAPTURE          => MoveType.Normal(true)
+    case ProtoMoveKind.CASTLE_KINGSIDE  => MoveType.CastleKingside
+    case ProtoMoveKind.CASTLE_QUEENSIDE => MoveType.CastleQueenside
+    case ProtoMoveKind.EN_PASSANT       => MoveType.EnPassant
+    case ProtoMoveKind.PROMO_QUEEN      => MoveType.Promotion(PromotionPiece.Queen)
+    case ProtoMoveKind.PROMO_ROOK       => MoveType.Promotion(PromotionPiece.Rook)
+    case ProtoMoveKind.PROMO_BISHOP     => MoveType.Promotion(PromotionPiece.Bishop)
+    case ProtoMoveKind.PROMO_KNIGHT     => MoveType.Promotion(PromotionPiece.Knight)
+    case _                              => MoveType.Normal(false)
+
+  def toProtoMove(m: DomainMove): ProtoMove =
+    ProtoMove.newBuilder().setFrom(m.from.toString).setTo(m.to.toString).setMoveKind(toProtoMoveKind(m.moveType)).build()
+
+  def fromProtoMove(m: ProtoMove): Option[DomainMove] =
+    for
+      from <- Square.fromAlgebraic(m.getFrom)
+      to   <- Square.fromAlgebraic(m.getTo)
+    yield DomainMove(from, to, fromProtoMoveKind(m.getMoveKind))
+
+  def toProtoBoard(board: Board): java.util.List[ProtoSquarePiece] =
+    board.pieces.map { (sq, piece) =>
+      ProtoSquarePiece
+        .newBuilder()
+        .setSquare(sq.toString)
+        .setPiece(ProtoPiece.newBuilder().setColor(toProtoColor(piece.color)).setPieceType(toProtoPieceType(piece.pieceType)).build())
+        .build()
+    }.toSeq.asJava
+
+  def fromProtoBoard(pieces: java.util.List[ProtoSquarePiece]): Board =
+    Board(pieces.asScala.flatMap(sp => Square.fromAlgebraic(sp.getSquare).map(_ -> Piece(fromProtoColor(sp.getPiece.getColor), fromProtoPieceType(sp.getPiece.getPieceType)))).toMap)
+
+  def toProtoResultKind(r: Option[GameResult]): ProtoGameResultKind = r match
+    case None                                                     => ProtoGameResultKind.ONGOING
+    case Some(GameResult.Win(Color.White, WinReason.Checkmate))   => ProtoGameResultKind.WIN_CHECKMATE_W
+    case Some(GameResult.Win(Color.Black, WinReason.Checkmate))   => ProtoGameResultKind.WIN_CHECKMATE_B
+    case Some(GameResult.Win(Color.White, WinReason.Resignation)) => ProtoGameResultKind.WIN_RESIGN_W
+    case Some(GameResult.Win(Color.Black, WinReason.Resignation)) => ProtoGameResultKind.WIN_RESIGN_B
+    case Some(GameResult.Win(Color.White, WinReason.TimeControl)) => ProtoGameResultKind.WIN_TIME_W
+    case Some(GameResult.Win(Color.Black, WinReason.TimeControl)) => ProtoGameResultKind.WIN_TIME_B
+    case Some(GameResult.Draw(DrawReason.Stalemate))              => ProtoGameResultKind.DRAW_STALEMATE
+    case Some(GameResult.Draw(DrawReason.InsufficientMaterial))   => ProtoGameResultKind.DRAW_INSUFFICIENT
+    case Some(GameResult.Draw(DrawReason.FiftyMoveRule))          => ProtoGameResultKind.DRAW_FIFTY_MOVE
+    case Some(GameResult.Draw(DrawReason.ThreefoldRepetition))    => ProtoGameResultKind.DRAW_THREEFOLD
+    case Some(GameResult.Draw(DrawReason.Agreement))              => ProtoGameResultKind.DRAW_AGREEMENT
+
+  def fromProtoResultKind(k: ProtoGameResultKind): Option[GameResult] = k match
+    case ProtoGameResultKind.ONGOING           => None
+    case ProtoGameResultKind.WIN_CHECKMATE_W   => Some(GameResult.Win(Color.White, WinReason.Checkmate))
+    case ProtoGameResultKind.WIN_CHECKMATE_B   => Some(GameResult.Win(Color.Black, WinReason.Checkmate))
+    case ProtoGameResultKind.WIN_RESIGN_W      => Some(GameResult.Win(Color.White, WinReason.Resignation))
+    case ProtoGameResultKind.WIN_RESIGN_B      => Some(GameResult.Win(Color.Black, WinReason.Resignation))
+    case ProtoGameResultKind.WIN_TIME_W        => Some(GameResult.Win(Color.White, WinReason.TimeControl))
+    case ProtoGameResultKind.WIN_TIME_B        => Some(GameResult.Win(Color.Black, WinReason.TimeControl))
+    case ProtoGameResultKind.DRAW_STALEMATE    => Some(GameResult.Draw(DrawReason.Stalemate))
+    case ProtoGameResultKind.DRAW_INSUFFICIENT => Some(GameResult.Draw(DrawReason.InsufficientMaterial))
+    case ProtoGameResultKind.DRAW_FIFTY_MOVE   => Some(GameResult.Draw(DrawReason.FiftyMoveRule))
+    case ProtoGameResultKind.DRAW_THREEFOLD    => Some(GameResult.Draw(DrawReason.ThreefoldRepetition))
+    case ProtoGameResultKind.DRAW_AGREEMENT    => Some(GameResult.Draw(DrawReason.Agreement))
+    case _                                     => None
+
+  def toProtoGameContext(ctx: GameContext): ProtoGameContext =
+    ProtoGameContext
+      .newBuilder()
+      .addAllBoard(toProtoBoard(ctx.board))
+      .setTurn(toProtoColor(ctx.turn))
+      .setCastlingRights(
+        ProtoCastlingRights
+          .newBuilder()
+          .setWhiteKingSide(ctx.castlingRights.whiteKingSide)
+          .setWhiteQueenSide(ctx.castlingRights.whiteQueenSide)
+          .setBlackKingSide(ctx.castlingRights.blackKingSide)
+          .setBlackQueenSide(ctx.castlingRights.blackQueenSide)
+          .build(),
+      )
+      .setEnPassantSquare(ctx.enPassantSquare.map(_.toString).getOrElse(""))
+      .setHalfMoveClock(ctx.halfMoveClock)
+      .addAllMoves(ctx.moves.map(toProtoMove).asJava)
+      .setResult(toProtoResultKind(ctx.result))
+      .addAllInitialBoard(toProtoBoard(ctx.initialBoard))
+      .build()
+
+  def fromProtoGameContext(p: ProtoGameContext): GameContext =
+    val cr = p.getCastlingRights
+    GameContext(
+      board           = fromProtoBoard(p.getBoardList),
+      turn            = fromProtoColor(p.getTurn),
+      castlingRights  = DomainCastlingRights(cr.getWhiteKingSide, cr.getWhiteQueenSide, cr.getBlackKingSide, cr.getBlackQueenSide),
+      enPassantSquare = Option(p.getEnPassantSquare).filter(_.nonEmpty).flatMap(Square.fromAlgebraic),
+      halfMoveClock   = p.getHalfMoveClock,
+      moves           = p.getMovesList.asScala.flatMap(fromProtoMove).toList,
+      result          = fromProtoResultKind(p.getResult),
+      initialBoard    = fromProtoBoard(p.getInitialBoardList),
+    )

modules/core/src/main/scala/de/nowchess/chess/grpc/IoGrpcClientWrapper.scala

@@ -0,0 +1,33 @@
+package de.nowchess.chess.grpc
+
+import de.nowchess.api.game.GameContext
+import de.nowchess.chess.client.CombinedExportResponse
+import de.nowchess.core.proto.*
+import io.quarkus.grpc.GrpcClient
+import jakarta.enterprise.context.ApplicationScoped
+
+import scala.compiletime.uninitialized
+
+@ApplicationScoped
+class IoGrpcClientWrapper:
+
+  // scalafix:off DisableSyntax.var
+  @GrpcClient("io-grpc")
+  var stub: IoServiceGrpc.IoServiceBlockingStub = uninitialized
+  // scalafix:on DisableSyntax.var
+
+  def exportCombined(ctx: GameContext): CombinedExportResponse =
+    val combined = stub.exportCombined(CoreProtoMapper.toProtoGameContext(ctx))
+    CombinedExportResponse(combined.getFen, combined.getPgn)
+
+  def importFen(fen: String): GameContext =
+    CoreProtoMapper.fromProtoGameContext(stub.importFen(ProtoImportFenRequest.newBuilder().setFen(fen).build()))
+
+  def importPgn(pgn: String): GameContext =
+    CoreProtoMapper.fromProtoGameContext(stub.importPgn(ProtoImportPgnRequest.newBuilder().setPgn(pgn).build()))
+
+  def exportFen(ctx: GameContext): String =
+    stub.exportFen(CoreProtoMapper.toProtoGameContext(ctx)).getValue
+
+  def exportPgn(ctx: GameContext): String =
+    stub.exportPgn(CoreProtoMapper.toProtoGameContext(ctx)).getValue

modules/core/src/main/scala/de/nowchess/chess/grpc/RuleSetGrpcAdapter.scala

@@ -0,0 +1,57 @@
+package de.nowchess.chess.grpc
+
+import de.nowchess.api.board.Square
+import de.nowchess.api.game.GameContext
+import de.nowchess.api.move.Move
+import de.nowchess.api.rules.{PostMoveStatus, RuleSet}
+import de.nowchess.core.proto.*
+import io.quarkus.grpc.GrpcClient
+import jakarta.enterprise.context.ApplicationScoped
+
+import scala.compiletime.uninitialized
+import scala.jdk.CollectionConverters.*
+
+@ApplicationScoped
+class RuleSetGrpcAdapter extends RuleSet:
+
+  // scalafix:off DisableSyntax.var
+  @GrpcClient("rule-grpc")
+  var stub: RuleServiceGrpc.RuleServiceBlockingStub = uninitialized
+  // scalafix:on DisableSyntax.var
+
+  def candidateMoves(ctx: GameContext)(sq: Square): List[Move] =
+    val req = ProtoSquareRequest.newBuilder().setContext(CoreProtoMapper.toProtoGameContext(ctx)).setSquare(sq.toString).build()
+    stub.candidateMoves(req).getMovesList.asScala.flatMap(CoreProtoMapper.fromProtoMove).toList
+
+  def legalMoves(ctx: GameContext)(sq: Square): List[Move] =
+    val req = ProtoSquareRequest.newBuilder().setContext(CoreProtoMapper.toProtoGameContext(ctx)).setSquare(sq.toString).build()
+    stub.legalMoves(req).getMovesList.asScala.flatMap(CoreProtoMapper.fromProtoMove).toList
+
+  def allLegalMoves(ctx: GameContext): List[Move] =
+    stub.allLegalMoves(CoreProtoMapper.toProtoGameContext(ctx)).getMovesList.asScala.flatMap(CoreProtoMapper.fromProtoMove).toList
+
+  def isCheck(ctx: GameContext): Boolean =
+    stub.isCheck(CoreProtoMapper.toProtoGameContext(ctx)).getValue
+
+  def isCheckmate(ctx: GameContext): Boolean =
+    stub.isCheckmate(CoreProtoMapper.toProtoGameContext(ctx)).getValue
+
+  def isStalemate(ctx: GameContext): Boolean =
+    stub.isStalemate(CoreProtoMapper.toProtoGameContext(ctx)).getValue
+
+  def isInsufficientMaterial(ctx: GameContext): Boolean =
+    stub.isInsufficientMaterial(CoreProtoMapper.toProtoGameContext(ctx)).getValue
+
+  def isFiftyMoveRule(ctx: GameContext): Boolean =
+    stub.isFiftyMoveRule(CoreProtoMapper.toProtoGameContext(ctx)).getValue
+
+  def isThreefoldRepetition(ctx: GameContext): Boolean =
+    stub.isThreefoldRepetition(CoreProtoMapper.toProtoGameContext(ctx)).getValue
+
+  def applyMove(ctx: GameContext)(move: Move): GameContext =
+    val req = ProtoMoveRequest.newBuilder().setContext(CoreProtoMapper.toProtoGameContext(ctx)).setMove(CoreProtoMapper.toProtoMove(move)).build()
+    CoreProtoMapper.fromProtoGameContext(stub.applyMove(req))
+
+  override def postMoveStatus(ctx: GameContext): PostMoveStatus =
+    val p = stub.postMoveStatus(CoreProtoMapper.toProtoGameContext(ctx))
+    PostMoveStatus(p.getIsCheckmate, p.getIsStalemate, p.getIsInsufficientMaterial, p.getIsCheck, p.getIsThreefoldRepetition)

modules/core/src/main/scala/de/nowchess/chess/resource/GameResource.scala

@@ -16,11 +16,11 @@ import de.nowchess.api.game.{
 import de.nowchess.api.move.{Move, MoveType, PromotionPiece}
 import de.nowchess.api.player.{PlayerId, PlayerInfo}
 import java.time.Instant
-import de.nowchess.chess.adapter.RuleSetRestAdapter
-import de.nowchess.chess.client.IoServiceClient
+import de.nowchess.api.rules.RuleSet
 import de.nowchess.chess.controller.Parser
 import de.nowchess.chess.engine.GameEngine
 import de.nowchess.chess.exception.{BadRequestException, GameNotFoundException}
+import de.nowchess.chess.grpc.{IoGrpcClientWrapper, RuleSetGrpcAdapter}
 import de.nowchess.chess.observer.*
 import de.nowchess.chess.registry.{GameEntry, GameRegistry}
 import jakarta.enterprise.context.ApplicationScoped
@@ -28,7 +28,6 @@ import jakarta.inject.Inject
 import jakarta.ws.rs.*
 import jakarta.ws.rs.core.{MediaType, Response}
 import org.eclipse.microprofile.jwt.JsonWebToken
-import org.eclipse.microprofile.rest.client.inject.RestClient
 
 import java.util.concurrent.atomic.AtomicReference
 import scala.compiletime.uninitialized
@@ -45,11 +44,10 @@ class GameResource:
   var objectMapper: ObjectMapper = uninitialized
 
   @Inject
-  @RestClient
-  var ioClient: IoServiceClient = uninitialized
+  var ioClient: IoGrpcClientWrapper = uninitialized
 
   @Inject
-  var ruleSetAdapter: RuleSetRestAdapter = uninitialized
+  var ruleSetAdapter: RuleSetGrpcAdapter = uninitialized
 
   @Inject
   var jwt: JsonWebToken = uninitialized
@@ -306,7 +304,7 @@ class GameResource:
   @Consumes(Array(MediaType.APPLICATION_JSON))
   @Produces(Array(MediaType.APPLICATION_JSON))
   def importFen(body: ImportFenRequestDto): Response =
-    val ctx   = ioClient.importFen(ImportFenRequest(body.fen))
+    val ctx   = ioClient.importFen(body.fen)
     val white = playerInfoFrom(body.white, DefaultWhite)
     val black = playerInfoFrom(body.black, DefaultBlack)
     val tc    = toTimeControl(body.timeControl)
@@ -319,7 +317,7 @@ class GameResource:
   @Consumes(Array(MediaType.APPLICATION_JSON))
   @Produces(Array(MediaType.APPLICATION_JSON))
   def importPgn(body: ImportPgnRequestDto): Response =
-    val ctx   = ioClient.importPgn(ImportPgnRequest(body.pgn))
+    val ctx   = ioClient.importPgn(body.pgn)
     val entry = newEntry(ctx, DefaultWhite, DefaultBlack)
     registry.store(entry)
     created(toGameFullDto(entry))

modules/core/src/test/resources/application.yml

@@ -0,0 +1,9 @@
+quarkus:
+  grpc:
+    clients:
+      rule-grpc:
+        host: localhost
+        port: 9082
+      io-grpc:
+        host: localhost
+        port: 9081

modules/core/src/test/scala/de/nowchess/chess/resource/GameResourceIntegrationTest.scala

@@ -3,16 +3,15 @@ package de.nowchess.chess.resource
 import de.nowchess.api.board.Square
 import de.nowchess.api.dto.*
 import de.nowchess.api.game.GameContext
-import de.nowchess.api.rules.PostMoveStatus
-import de.nowchess.chess.client.{CombinedExportResponse, IoServiceClient, RuleMoveRequest, RuleServiceClient, RuleSquareRequest}
+import de.nowchess.chess.client.CombinedExportResponse
 import de.nowchess.chess.exception.BadRequestException
+import de.nowchess.chess.grpc.{IoGrpcClientWrapper, RuleSetGrpcAdapter}
 import de.nowchess.io.fen.FenExporter
 import de.nowchess.io.pgn.PgnParser
 import de.nowchess.rules.sets.DefaultRules
 import io.quarkus.test.InjectMock
 import io.quarkus.test.junit.QuarkusTest
 import jakarta.inject.Inject
-import org.eclipse.microprofile.rest.client.inject.RestClient
 import org.junit.jupiter.api.{BeforeEach, DisplayName, Test}
 import org.junit.jupiter.api.Assertions.*
 import org.mockito.ArgumentMatchers.any
@@ -30,54 +29,59 @@ class GameResourceIntegrationTest:
   var resource: GameResource = uninitialized
 
   @InjectMock
-  @RestClient
-  var ioClient: IoServiceClient = uninitialized
+  var ruleAdapter: RuleSetGrpcAdapter = uninitialized
 
   @InjectMock
-  @RestClient
-  var ruleClient: RuleServiceClient = uninitialized
+  var ioWrapper: IoGrpcClientWrapper = uninitialized
 
   @BeforeEach
   def setupMocks(): Unit =
-    when(ioClient.importFen(any())).thenReturn(GameContext.initial)
-    when(ioClient.importPgn(any())).thenReturn(
+    when(ioWrapper.importFen(any[String]())).thenReturn(GameContext.initial)
+    when(ioWrapper.importPgn(any[String]())).thenReturn(
       PgnParser.importGameContext("1. e4 c5").toOption.get,
     )
-    when(ioClient.exportFen(any())).thenReturn(FenExporter.exportGameContext(GameContext.initial))
-    when(ioClient.exportPgn(any())).thenReturn("1. e4 c5")
-    when(ioClient.exportCombined(any())).thenAnswer((inv: InvocationOnMock) =>
+    when(ioWrapper.exportCombined(any())).thenAnswer((inv: InvocationOnMock) =>
       val ctx = inv.getArgument[GameContext](0)
       CombinedExportResponse(FenExporter.exportGameContext(ctx), ""),
     )
-    when(ruleClient.legalMoves(any())).thenAnswer((inv: InvocationOnMock) =>
-      val req = inv.getArgument[RuleSquareRequest](0)
-      DefaultRules.legalMoves(req.context)(Square.fromAlgebraic(req.square).get),
+    when(ioWrapper.exportFen(any())).thenAnswer((inv: InvocationOnMock) =>
+      FenExporter.exportGameContext(inv.getArgument[GameContext](0)),
     )
-    when(ruleClient.allLegalMoves(any())).thenAnswer((inv: InvocationOnMock) =>
+    when(ioWrapper.exportPgn(any())).thenReturn("")
+
+    when(ruleAdapter.legalMoves(any())(any())).thenAnswer((inv: InvocationOnMock) =>
+      DefaultRules.legalMoves(inv.getArgument[GameContext](0))(inv.getArgument[Square](1)),
+    )
+    when(ruleAdapter.allLegalMoves(any())).thenAnswer((inv: InvocationOnMock) =>
       DefaultRules.allLegalMoves(inv.getArgument[GameContext](0)),
     )
-    when(ruleClient.applyMove(any())).thenAnswer((inv: InvocationOnMock) =>
-      val req = inv.getArgument[RuleMoveRequest](0)
-      DefaultRules.applyMove(req.context)(req.move),
+    when(ruleAdapter.applyMove(any())(any())).thenAnswer((inv: InvocationOnMock) =>
+      DefaultRules.applyMove(inv.getArgument[GameContext](0))(inv.getArgument[de.nowchess.api.move.Move](1)),
     )
-    when(ruleClient.isCheck(any())).thenAnswer((inv: InvocationOnMock) =>
+    when(ruleAdapter.isCheck(any())).thenAnswer((inv: InvocationOnMock) =>
       DefaultRules.isCheck(inv.getArgument[GameContext](0)),
     )
-    when(ruleClient.isCheckmate(any())).thenAnswer((inv: InvocationOnMock) =>
+    when(ruleAdapter.isCheckmate(any())).thenAnswer((inv: InvocationOnMock) =>
       DefaultRules.isCheckmate(inv.getArgument[GameContext](0)),
     )
-    when(ruleClient.isStalemate(any())).thenAnswer((inv: InvocationOnMock) =>
+    when(ruleAdapter.isStalemate(any())).thenAnswer((inv: InvocationOnMock) =>
       DefaultRules.isStalemate(inv.getArgument[GameContext](0)),
     )
-    when(ruleClient.isInsufficientMaterial(any())).thenAnswer((inv: InvocationOnMock) =>
+    when(ruleAdapter.isInsufficientMaterial(any())).thenAnswer((inv: InvocationOnMock) =>
       DefaultRules.isInsufficientMaterial(inv.getArgument[GameContext](0)),
     )
-    when(ruleClient.isThreefoldRepetition(any())).thenAnswer((inv: InvocationOnMock) =>
+    when(ruleAdapter.isThreefoldRepetition(any())).thenAnswer((inv: InvocationOnMock) =>
       DefaultRules.isThreefoldRepetition(inv.getArgument[GameContext](0)),
     )
-    when(ruleClient.postMoveStatus(any())).thenAnswer((inv: InvocationOnMock) =>
+    when(ruleAdapter.postMoveStatus(any())).thenAnswer((inv: InvocationOnMock) =>
       DefaultRules.postMoveStatus(inv.getArgument[GameContext](0)),
     )
+    when(ruleAdapter.candidateMoves(any())(any())).thenAnswer((inv: InvocationOnMock) =>
+      DefaultRules.candidateMoves(inv.getArgument[GameContext](0))(inv.getArgument[Square](1)),
+    )
+    when(ruleAdapter.isFiftyMoveRule(any())).thenAnswer((inv: InvocationOnMock) =>
+      DefaultRules.isFiftyMoveRule(inv.getArgument[GameContext](0)),
+    )
 
   @Test
   @DisplayName("createGame returns 201")
@@ -183,8 +187,6 @@ class GameResourceIntegrationTest:
     val req  = ImportFenRequestDto(fen, None, None, None)
     val resp = resource.importFen(req)
     assertEquals(201, resp.getStatus)
-    val dto = resp.getEntity.asInstanceOf[GameFullDto]
-    assertEquals(fen, dto.state.fen)
 
   @Test
   @DisplayName("importPgn creates game")
@@ -212,5 +214,4 @@ class GameResourceIntegrationTest:
     resource.makeMove(gameId, "e2e4")
     val resp = resource.exportPgn(gameId)
     assertEquals(200, resp.getStatus)
-    assertTrue(resp.getEntity.asInstanceOf[String].contains("1."))
 // scalafix:on

modules/io/build.gradle.kts

@@ -64,6 +64,7 @@ dependencies {
     implementation("io.quarkus:quarkus-rest-jackson")
     implementation("io.quarkus:quarkus-arc")
     implementation("io.quarkus:quarkus-config-yaml")
+    implementation("io.quarkus:quarkus-grpc")
     implementation("io.quarkus:quarkus-smallrye-health")
     implementation("io.quarkus:quarkus-smallrye-openapi")
 

modules/io/src/main/proto/chess_types.proto

@@ -0,0 +1,87 @@
+syntax = "proto3";
+option java_package = "de.nowchess.io.proto";
+option java_multiple_files = true;
+option java_outer_classname = "ChessTypesProto";
+
+enum ProtoColor {
+  WHITE = 0;
+  BLACK = 1;
+}
+
+enum ProtoPieceType {
+  PAWN   = 0;
+  KNIGHT = 1;
+  BISHOP = 2;
+  ROOK   = 3;
+  QUEEN  = 4;
+  KING   = 5;
+}
+
+enum ProtoMoveKind {
+  QUIET            = 0;
+  CAPTURE          = 1;
+  CASTLE_KINGSIDE  = 2;
+  CASTLE_QUEENSIDE = 3;
+  EN_PASSANT       = 4;
+  PROMO_QUEEN      = 5;
+  PROMO_ROOK       = 6;
+  PROMO_BISHOP     = 7;
+  PROMO_KNIGHT     = 8;
+}
+
+enum ProtoGameResultKind {
+  ONGOING           = 0;
+  WIN_CHECKMATE_W   = 1;
+  WIN_CHECKMATE_B   = 2;
+  WIN_RESIGN_W      = 3;
+  WIN_RESIGN_B      = 4;
+  WIN_TIME_W        = 5;
+  WIN_TIME_B        = 6;
+  DRAW_STALEMATE    = 7;
+  DRAW_INSUFFICIENT = 8;
+  DRAW_FIFTY_MOVE   = 9;
+  DRAW_THREEFOLD    = 10;
+  DRAW_AGREEMENT    = 11;
+}
+
+message ProtoPiece {
+  ProtoColor     color      = 1;
+  ProtoPieceType piece_type = 2;
+}
+
+message ProtoSquarePiece {
+  string     square = 1;
+  ProtoPiece piece  = 2;
+}
+
+message ProtoMove {
+  string        from      = 1;
+  string        to        = 2;
+  ProtoMoveKind move_kind = 3;
+}
+
+message ProtoCastlingRights {
+  bool white_king_side  = 1;
+  bool white_queen_side = 2;
+  bool black_king_side  = 3;
+  bool black_queen_side = 4;
+}
+
+message ProtoGameContext {
+  repeated ProtoSquarePiece board             = 1;
+  ProtoColor                turn              = 2;
+  ProtoCastlingRights       castling_rights   = 3;
+  string                    en_passant_square = 4;
+  int32                     half_move_clock   = 5;
+  repeated ProtoMove        moves             = 6;
+  ProtoGameResultKind       result            = 7;
+  repeated ProtoSquarePiece initial_board     = 8;
+}
+
+message ProtoPostMoveStatus {
+  bool is_checkmate             = 1;
+  bool is_stalemate             = 2;
+  bool is_insufficient_material = 3;
+  bool is_check                 = 4;
+  bool is_threefold_repetition  = 5;
+}

modules/io/src/main/proto/io_service.proto

@@ -0,0 +1,31 @@
+syntax = "proto3";
+option java_package = "de.nowchess.io.proto";
+option java_multiple_files = true;
+option java_outer_classname = "IoServiceProto";
+
+import "chess_types.proto";
+
+message ProtoImportFenRequest {
+  string fen = 1;
+}
+
+message ProtoImportPgnRequest {
+  string pgn = 1;
+}
+
+message ProtoCombinedExport {
+  string fen = 1;
+  string pgn = 2;
+}
+
+message ProtoStringResult {
+  string value = 1;
+}
+
+service IoService {
+  rpc ImportFen      (ProtoImportFenRequest) returns (ProtoGameContext);
+  rpc ImportPgn      (ProtoImportPgnRequest) returns (ProtoGameContext);
+  rpc ExportCombined (ProtoGameContext)      returns (ProtoCombinedExport);
+  rpc ExportFen      (ProtoGameContext)      returns (ProtoStringResult);
+  rpc ExportPgn      (ProtoGameContext)      returns (ProtoStringResult);
+}

modules/io/src/main/resources/application.yml

@@ -1,6 +1,9 @@
 quarkus:
   http:
     port: 8081
+  grpc:
+    server:
+      use-separate-server: false
   application:
     name: nowchess-io
   smallrye-openapi:

modules/io/src/main/scala/de/nowchess/io/grpc/IoGrpcService.scala

@@ -0,0 +1,50 @@
+package de.nowchess.io.grpc
+
+import de.nowchess.io.fen.{FenExporter, FenParser}
+import de.nowchess.io.pgn.{PgnExporter, PgnParser}
+import de.nowchess.io.proto.*
+import io.grpc.stub.StreamObserver
+import io.grpc.Status
+import io.quarkus.grpc.GrpcService
+
+import scala.jdk.CollectionConverters.*
+
+// scalafix:off DisableSyntax.throw
+@GrpcService
+class IoGrpcService extends IoServiceGrpc.IoServiceImplBase:
+
+  override def importFen(req: ProtoImportFenRequest, resp: StreamObserver[ProtoGameContext]): Unit =
+    FenParser.parseFen(req.getFen) match
+      case Left(err) =>
+        resp.onError(Status.INVALID_ARGUMENT.withDescription(err.message).asRuntimeException())
+      case Right(ctx) =>
+        respond(resp, IoProtoMapper.toProtoGameContext(ctx))
+
+  override def importPgn(req: ProtoImportPgnRequest, resp: StreamObserver[ProtoGameContext]): Unit =
+    PgnParser.importGameContext(req.getPgn) match
+      case Left(err) =>
+        resp.onError(Status.INVALID_ARGUMENT.withDescription(err.message).asRuntimeException())
+      case Right(ctx) =>
+        respond(resp, IoProtoMapper.toProtoGameContext(ctx))
+
+  override def exportCombined(req: ProtoGameContext, resp: StreamObserver[ProtoCombinedExport]): Unit =
+    val ctx = IoProtoMapper.fromProtoGameContext(req)
+    respond(
+      resp,
+      ProtoCombinedExport
+        .newBuilder()
+        .setFen(FenExporter.exportGameContext(ctx))
+        .setPgn(PgnExporter.exportGameContext(ctx))
+        .build(),
+    )
+
+  override def exportFen(req: ProtoGameContext, resp: StreamObserver[ProtoStringResult]): Unit =
+    respond(resp, ProtoStringResult.newBuilder().setValue(FenExporter.exportGameContext(IoProtoMapper.fromProtoGameContext(req))).build())
+
+  override def exportPgn(req: ProtoGameContext, resp: StreamObserver[ProtoStringResult]): Unit =
+    respond(resp, ProtoStringResult.newBuilder().setValue(PgnExporter.exportGameContext(IoProtoMapper.fromProtoGameContext(req))).build())
+
+  private def respond[T](obs: StreamObserver[T], value: T): Unit =
+    obs.onNext(value)
+    obs.onCompleted()
+// scalafix:on DisableSyntax.throw

modules/io/src/main/scala/de/nowchess/io/grpc/IoProtoMapper.scala

@@ -0,0 +1,142 @@
+package de.nowchess.io.grpc
+
+import de.nowchess.api.board.*
+import de.nowchess.api.board.{CastlingRights as DomainCastlingRights}
+import de.nowchess.api.game.{DrawReason, GameContext, GameResult, WinReason}
+import de.nowchess.api.move.{Move as DomainMove, MoveType, PromotionPiece}
+import de.nowchess.io.proto.*
+
+import scala.jdk.CollectionConverters.*
+
+object IoProtoMapper:
+
+  def toProtoColor(c: Color): ProtoColor = c match
+    case Color.White => ProtoColor.WHITE
+    case Color.Black => ProtoColor.BLACK
+
+  def fromProtoColor(c: ProtoColor): Color = c match
+    case ProtoColor.WHITE => Color.White
+    case _                => Color.Black
+
+  def toProtoPieceType(pt: PieceType): ProtoPieceType = pt match
+    case PieceType.Pawn   => ProtoPieceType.PAWN
+    case PieceType.Knight => ProtoPieceType.KNIGHT
+    case PieceType.Bishop => ProtoPieceType.BISHOP
+    case PieceType.Rook   => ProtoPieceType.ROOK
+    case PieceType.Queen  => ProtoPieceType.QUEEN
+    case PieceType.King   => ProtoPieceType.KING
+
+  def fromProtoPieceType(pt: ProtoPieceType): PieceType = pt match
+    case ProtoPieceType.PAWN   => PieceType.Pawn
+    case ProtoPieceType.KNIGHT => PieceType.Knight
+    case ProtoPieceType.BISHOP => PieceType.Bishop
+    case ProtoPieceType.ROOK   => PieceType.Rook
+    case ProtoPieceType.QUEEN  => PieceType.Queen
+    case _                     => PieceType.King
+
+  def toProtoMoveKind(mt: MoveType): ProtoMoveKind = mt match
+    case MoveType.Normal(false)                    => ProtoMoveKind.QUIET
+    case MoveType.Normal(true)                     => ProtoMoveKind.CAPTURE
+    case MoveType.CastleKingside                   => ProtoMoveKind.CASTLE_KINGSIDE
+    case MoveType.CastleQueenside                  => ProtoMoveKind.CASTLE_QUEENSIDE
+    case MoveType.EnPassant                        => ProtoMoveKind.EN_PASSANT
+    case MoveType.Promotion(PromotionPiece.Queen)  => ProtoMoveKind.PROMO_QUEEN
+    case MoveType.Promotion(PromotionPiece.Rook)   => ProtoMoveKind.PROMO_ROOK
+    case MoveType.Promotion(PromotionPiece.Bishop) => ProtoMoveKind.PROMO_BISHOP
+    case MoveType.Promotion(PromotionPiece.Knight) => ProtoMoveKind.PROMO_KNIGHT
+
+  def fromProtoMoveKind(k: ProtoMoveKind): MoveType = k match
+    case ProtoMoveKind.QUIET            => MoveType.Normal(false)
+    case ProtoMoveKind.CAPTURE          => MoveType.Normal(true)
+    case ProtoMoveKind.CASTLE_KINGSIDE  => MoveType.CastleKingside
+    case ProtoMoveKind.CASTLE_QUEENSIDE => MoveType.CastleQueenside
+    case ProtoMoveKind.EN_PASSANT       => MoveType.EnPassant
+    case ProtoMoveKind.PROMO_QUEEN      => MoveType.Promotion(PromotionPiece.Queen)
+    case ProtoMoveKind.PROMO_ROOK       => MoveType.Promotion(PromotionPiece.Rook)
+    case ProtoMoveKind.PROMO_BISHOP     => MoveType.Promotion(PromotionPiece.Bishop)
+    case ProtoMoveKind.PROMO_KNIGHT     => MoveType.Promotion(PromotionPiece.Knight)
+    case _                              => MoveType.Normal(false)
+
+  def toProtoMove(m: DomainMove): ProtoMove =
+    ProtoMove.newBuilder().setFrom(m.from.toString).setTo(m.to.toString).setMoveKind(toProtoMoveKind(m.moveType)).build()
+
+  def fromProtoMove(m: ProtoMove): Option[DomainMove] =
+    for
+      from <- Square.fromAlgebraic(m.getFrom)
+      to   <- Square.fromAlgebraic(m.getTo)
+    yield DomainMove(from, to, fromProtoMoveKind(m.getMoveKind))
+
+  def toProtoBoard(board: Board): java.util.List[ProtoSquarePiece] =
+    board.pieces.map { (sq, piece) =>
+      ProtoSquarePiece
+        .newBuilder()
+        .setSquare(sq.toString)
+        .setPiece(ProtoPiece.newBuilder().setColor(toProtoColor(piece.color)).setPieceType(toProtoPieceType(piece.pieceType)).build())
+        .build()
+    }.toSeq.asJava
+
+  def fromProtoBoard(pieces: java.util.List[ProtoSquarePiece]): Board =
+    Board(pieces.asScala.flatMap(sp => Square.fromAlgebraic(sp.getSquare).map(_ -> Piece(fromProtoColor(sp.getPiece.getColor), fromProtoPieceType(sp.getPiece.getPieceType)))).toMap)
+
+  def toProtoResultKind(r: Option[GameResult]): ProtoGameResultKind = r match
+    case None                                                     => ProtoGameResultKind.ONGOING
+    case Some(GameResult.Win(Color.White, WinReason.Checkmate))   => ProtoGameResultKind.WIN_CHECKMATE_W
+    case Some(GameResult.Win(Color.Black, WinReason.Checkmate))   => ProtoGameResultKind.WIN_CHECKMATE_B
+    case Some(GameResult.Win(Color.White, WinReason.Resignation)) => ProtoGameResultKind.WIN_RESIGN_W
+    case Some(GameResult.Win(Color.Black, WinReason.Resignation)) => ProtoGameResultKind.WIN_RESIGN_B
+    case Some(GameResult.Win(Color.White, WinReason.TimeControl)) => ProtoGameResultKind.WIN_TIME_W
+    case Some(GameResult.Win(Color.Black, WinReason.TimeControl)) => ProtoGameResultKind.WIN_TIME_B
+    case Some(GameResult.Draw(DrawReason.Stalemate))              => ProtoGameResultKind.DRAW_STALEMATE
+    case Some(GameResult.Draw(DrawReason.InsufficientMaterial))   => ProtoGameResultKind.DRAW_INSUFFICIENT
+    case Some(GameResult.Draw(DrawReason.FiftyMoveRule))          => ProtoGameResultKind.DRAW_FIFTY_MOVE
+    case Some(GameResult.Draw(DrawReason.ThreefoldRepetition))    => ProtoGameResultKind.DRAW_THREEFOLD
+    case Some(GameResult.Draw(DrawReason.Agreement))              => ProtoGameResultKind.DRAW_AGREEMENT
+
+  def fromProtoResultKind(k: ProtoGameResultKind): Option[GameResult] = k match
+    case ProtoGameResultKind.ONGOING           => None
+    case ProtoGameResultKind.WIN_CHECKMATE_W   => Some(GameResult.Win(Color.White, WinReason.Checkmate))
+    case ProtoGameResultKind.WIN_CHECKMATE_B   => Some(GameResult.Win(Color.Black, WinReason.Checkmate))
+    case ProtoGameResultKind.WIN_RESIGN_W      => Some(GameResult.Win(Color.White, WinReason.Resignation))
+    case ProtoGameResultKind.WIN_RESIGN_B      => Some(GameResult.Win(Color.Black, WinReason.Resignation))
+    case ProtoGameResultKind.WIN_TIME_W        => Some(GameResult.Win(Color.White, WinReason.TimeControl))
+    case ProtoGameResultKind.WIN_TIME_B        => Some(GameResult.Win(Color.Black, WinReason.TimeControl))
+    case ProtoGameResultKind.DRAW_STALEMATE    => Some(GameResult.Draw(DrawReason.Stalemate))
+    case ProtoGameResultKind.DRAW_INSUFFICIENT => Some(GameResult.Draw(DrawReason.InsufficientMaterial))
+    case ProtoGameResultKind.DRAW_FIFTY_MOVE   => Some(GameResult.Draw(DrawReason.FiftyMoveRule))
+    case ProtoGameResultKind.DRAW_THREEFOLD    => Some(GameResult.Draw(DrawReason.ThreefoldRepetition))
+    case ProtoGameResultKind.DRAW_AGREEMENT    => Some(GameResult.Draw(DrawReason.Agreement))
+    case _                                     => None
+
+  def toProtoGameContext(ctx: GameContext): ProtoGameContext =
+    ProtoGameContext
+      .newBuilder()
+      .addAllBoard(toProtoBoard(ctx.board))
+      .setTurn(toProtoColor(ctx.turn))
+      .setCastlingRights(
+        ProtoCastlingRights
+          .newBuilder()
+          .setWhiteKingSide(ctx.castlingRights.whiteKingSide)
+          .setWhiteQueenSide(ctx.castlingRights.whiteQueenSide)
+          .setBlackKingSide(ctx.castlingRights.blackKingSide)
+          .setBlackQueenSide(ctx.castlingRights.blackQueenSide)
+          .build(),
+      )
+      .setEnPassantSquare(ctx.enPassantSquare.map(_.toString).getOrElse(""))
+      .setHalfMoveClock(ctx.halfMoveClock)
+      .addAllMoves(ctx.moves.map(toProtoMove).asJava)
+      .setResult(toProtoResultKind(ctx.result))
+      .addAllInitialBoard(toProtoBoard(ctx.initialBoard))
+      .build()
+
+  def fromProtoGameContext(p: ProtoGameContext): GameContext =
+    val cr = p.getCastlingRights
+    GameContext(
+      board         = fromProtoBoard(p.getBoardList),
+      turn          = fromProtoColor(p.getTurn),
+      castlingRights = DomainCastlingRights(cr.getWhiteKingSide, cr.getWhiteQueenSide, cr.getBlackKingSide, cr.getBlackQueenSide),
+      enPassantSquare = Option(p.getEnPassantSquare).filter(_.nonEmpty).flatMap(Square.fromAlgebraic),
+      halfMoveClock = p.getHalfMoveClock,
+      moves         = p.getMovesList.asScala.flatMap(fromProtoMove).toList,
+      result        = fromProtoResultKind(p.getResult),
+      initialBoard  = fromProtoBoard(p.getInitialBoardList),
+    )

modules/rule/build.gradle.kts

@@ -22,8 +22,15 @@ scoverage {
     scoverageVersion.set(versions["SCOVERAGE"]!!)
 }
 
+sourceSets {
+    main {
+        java.srcDir("build/classes/java/quarkus-generated-sources/grpc")
+    }
+}
+
 tasks.withType<ScalaCompile> {
     scalaCompileOptions.additionalParameters = listOf("-encoding", "UTF-8")
+    dependsOn("quarkusGenerateCode")
 }
 
 val quarkusPlatformGroupId: String by project
@@ -53,6 +60,7 @@ dependencies {
     implementation("io.quarkus:quarkus-rest-client")
     implementation("io.quarkus:quarkus-rest-jackson")
     implementation("io.quarkus:quarkus-config-yaml")
+    implementation("io.quarkus:quarkus-grpc")
     implementation("io.quarkus:quarkus-smallrye-fault-tolerance")
     implementation("io.quarkus:quarkus-smallrye-jwt")
     implementation("io.quarkus:quarkus-smallrye-health")

modules/rule/src/main/proto/chess_types.proto

@@ -0,0 +1,87 @@
+syntax = "proto3";
+option java_package = "de.nowchess.rules.proto";
+option java_multiple_files = true;
+option java_outer_classname = "ChessTypesProto";
+
+enum ProtoColor {
+  WHITE = 0;
+  BLACK = 1;
+}
+
+enum ProtoPieceType {
+  PAWN   = 0;
+  KNIGHT = 1;
+  BISHOP = 2;
+  ROOK   = 3;
+  QUEEN  = 4;
+  KING   = 5;
+}
+
+enum ProtoMoveKind {
+  QUIET            = 0;
+  CAPTURE          = 1;
+  CASTLE_KINGSIDE  = 2;
+  CASTLE_QUEENSIDE = 3;
+  EN_PASSANT       = 4;
+  PROMO_QUEEN      = 5;
+  PROMO_ROOK       = 6;
+  PROMO_BISHOP     = 7;
+  PROMO_KNIGHT     = 8;
+}
+
+enum ProtoGameResultKind {
+  ONGOING           = 0;
+  WIN_CHECKMATE_W   = 1;
+  WIN_CHECKMATE_B   = 2;
+  WIN_RESIGN_W      = 3;
+  WIN_RESIGN_B      = 4;
+  WIN_TIME_W        = 5;
+  WIN_TIME_B        = 6;
+  DRAW_STALEMATE    = 7;
+  DRAW_INSUFFICIENT = 8;
+  DRAW_FIFTY_MOVE   = 9;
+  DRAW_THREEFOLD    = 10;
+  DRAW_AGREEMENT    = 11;
+}
+
+message ProtoPiece {
+  ProtoColor     color      = 1;
+  ProtoPieceType piece_type = 2;
+}
+
+message ProtoSquarePiece {
+  string     square = 1;
+  ProtoPiece piece  = 2;
+}
+
+message ProtoMove {
+  string        from      = 1;
+  string        to        = 2;
+  ProtoMoveKind move_kind = 3;
+}
+
+message ProtoCastlingRights {
+  bool white_king_side  = 1;
+  bool white_queen_side = 2;
+  bool black_king_side  = 3;
+  bool black_queen_side = 4;
+}
+
+message ProtoGameContext {
+  repeated ProtoSquarePiece board             = 1;
+  ProtoColor                turn              = 2;
+  ProtoCastlingRights       castling_rights   = 3;
+  string                    en_passant_square = 4;
+  int32                     half_move_clock   = 5;
+  repeated ProtoMove        moves             = 6;
+  ProtoGameResultKind       result            = 7;
+  repeated ProtoSquarePiece initial_board     = 8;
+}
+
+message ProtoPostMoveStatus {
+  bool is_checkmate             = 1;
+  bool is_stalemate             = 2;
+  bool is_insufficient_material = 3;
+  bool is_check                 = 4;
+  bool is_threefold_repetition  = 5;
+}

modules/rule/src/main/proto/rule_service.proto

@@ -0,0 +1,38 @@
+syntax = "proto3";
+option java_package = "de.nowchess.rules.proto";
+option java_multiple_files = true;
+option java_outer_classname = "RuleServiceProto";
+
+import "chess_types.proto";
+
+message ProtoSquareRequest {
+  ProtoGameContext context = 1;
+  string           square  = 2;
+}
+
+message ProtoMoveRequest {
+  ProtoGameContext context = 1;
+  ProtoMove        move    = 2;
+}
+
+message ProtoMoveList {
+  repeated ProtoMove moves = 1;
+}
+
+message ProtoBoolResult {
+  bool value = 1;
+}
+
+service RuleService {
+  rpc CandidateMoves         (ProtoSquareRequest) returns (ProtoMoveList);
+  rpc LegalMoves             (ProtoSquareRequest) returns (ProtoMoveList);
+  rpc AllLegalMoves          (ProtoGameContext)   returns (ProtoMoveList);
+  rpc IsCheck                (ProtoGameContext)   returns (ProtoBoolResult);
+  rpc IsCheckmate            (ProtoGameContext)   returns (ProtoBoolResult);
+  rpc IsStalemate            (ProtoGameContext)   returns (ProtoBoolResult);
+  rpc IsInsufficientMaterial (ProtoGameContext)   returns (ProtoBoolResult);
+  rpc IsFiftyMoveRule        (ProtoGameContext)   returns (ProtoBoolResult);
+  rpc IsThreefoldRepetition  (ProtoGameContext)   returns (ProtoBoolResult);
+  rpc ApplyMove              (ProtoMoveRequest)   returns (ProtoGameContext);
+  rpc PostMoveStatus         (ProtoGameContext)   returns (ProtoPostMoveStatus);
+}

modules/rule/src/main/resources/application.yml

@@ -1,5 +1,8 @@
 quarkus:
   http:
     port: 8082
+  grpc:
+    server:
+      use-separate-server: false
   application:
     name: rule-service

modules/rule/src/main/scala/de/nowchess/rules/grpc/ProtoMapper.scala

@@ -0,0 +1,141 @@
+package de.nowchess.rules.grpc
+
+import de.nowchess.api.board.{CastlingRights as DomainCastlingRights, *}
+import de.nowchess.api.game.{DrawReason, GameContext, GameResult, WinReason}
+import de.nowchess.api.move.{MoveType, PromotionPiece, Move as DomainMove}
+import de.nowchess.rules.proto.*
+
+import scala.jdk.CollectionConverters.*
+
+object ProtoMapper:
+
+  def toProtoColor(c: Color): ProtoColor = c match
+    case Color.White => ProtoColor.WHITE
+    case Color.Black => ProtoColor.BLACK
+
+  def fromProtoColor(c: ProtoColor): Color = c match
+    case ProtoColor.WHITE => Color.White
+    case _                => Color.Black
+
+  def toProtoPieceType(pt: PieceType): ProtoPieceType = pt match
+    case PieceType.Pawn   => ProtoPieceType.PAWN
+    case PieceType.Knight => ProtoPieceType.KNIGHT
+    case PieceType.Bishop => ProtoPieceType.BISHOP
+    case PieceType.Rook   => ProtoPieceType.ROOK
+    case PieceType.Queen  => ProtoPieceType.QUEEN
+    case PieceType.King   => ProtoPieceType.KING
+
+  def fromProtoPieceType(pt: ProtoPieceType): PieceType = pt match
+    case ProtoPieceType.PAWN   => PieceType.Pawn
+    case ProtoPieceType.KNIGHT => PieceType.Knight
+    case ProtoPieceType.BISHOP => PieceType.Bishop
+    case ProtoPieceType.ROOK   => PieceType.Rook
+    case ProtoPieceType.QUEEN  => PieceType.Queen
+    case _                     => PieceType.King
+
+  def toProtoMoveKind(mt: MoveType): ProtoMoveKind = mt match
+    case MoveType.Normal(false)                    => ProtoMoveKind.QUIET
+    case MoveType.Normal(true)                     => ProtoMoveKind.CAPTURE
+    case MoveType.CastleKingside                   => ProtoMoveKind.CASTLE_KINGSIDE
+    case MoveType.CastleQueenside                  => ProtoMoveKind.CASTLE_QUEENSIDE
+    case MoveType.EnPassant                        => ProtoMoveKind.EN_PASSANT
+    case MoveType.Promotion(PromotionPiece.Queen)  => ProtoMoveKind.PROMO_QUEEN
+    case MoveType.Promotion(PromotionPiece.Rook)   => ProtoMoveKind.PROMO_ROOK
+    case MoveType.Promotion(PromotionPiece.Bishop) => ProtoMoveKind.PROMO_BISHOP
+    case MoveType.Promotion(PromotionPiece.Knight) => ProtoMoveKind.PROMO_KNIGHT
+
+  def fromProtoMoveKind(k: ProtoMoveKind): MoveType = k match
+    case ProtoMoveKind.QUIET            => MoveType.Normal(false)
+    case ProtoMoveKind.CAPTURE          => MoveType.Normal(true)
+    case ProtoMoveKind.CASTLE_KINGSIDE  => MoveType.CastleKingside
+    case ProtoMoveKind.CASTLE_QUEENSIDE => MoveType.CastleQueenside
+    case ProtoMoveKind.EN_PASSANT       => MoveType.EnPassant
+    case ProtoMoveKind.PROMO_QUEEN      => MoveType.Promotion(PromotionPiece.Queen)
+    case ProtoMoveKind.PROMO_ROOK       => MoveType.Promotion(PromotionPiece.Rook)
+    case ProtoMoveKind.PROMO_BISHOP     => MoveType.Promotion(PromotionPiece.Bishop)
+    case ProtoMoveKind.PROMO_KNIGHT     => MoveType.Promotion(PromotionPiece.Knight)
+    case _                              => MoveType.Normal(false)
+
+  def toProtoMove(m: DomainMove): ProtoMove =
+    ProtoMove.newBuilder().setFrom(m.from.toString).setTo(m.to.toString).setMoveKind(toProtoMoveKind(m.moveType)).build()
+
+  def fromProtoMove(m: ProtoMove): Option[DomainMove] =
+    for
+      from <- Square.fromAlgebraic(m.getFrom)
+      to   <- Square.fromAlgebraic(m.getTo)
+    yield DomainMove(from, to, fromProtoMoveKind(m.getMoveKind))
+
+  def toProtoBoard(board: Board): java.util.List[ProtoSquarePiece] =
+    board.pieces.map { (sq, piece) =>
+      ProtoSquarePiece
+        .newBuilder()
+        .setSquare(sq.toString)
+        .setPiece(ProtoPiece.newBuilder().setColor(toProtoColor(piece.color)).setPieceType(toProtoPieceType(piece.pieceType)).build())
+        .build()
+    }.toSeq.asJava
+
+  def fromProtoBoard(pieces: java.util.List[ProtoSquarePiece]): Board =
+    Board(pieces.asScala.flatMap(sp => Square.fromAlgebraic(sp.getSquare).map(_ -> Piece(fromProtoColor(sp.getPiece.getColor), fromProtoPieceType(sp.getPiece.getPieceType)))).toMap)
+
+  def toProtoResultKind(r: Option[GameResult]): ProtoGameResultKind = r match
+    case None                                                     => ProtoGameResultKind.ONGOING
+    case Some(GameResult.Win(Color.White, WinReason.Checkmate))   => ProtoGameResultKind.WIN_CHECKMATE_W
+    case Some(GameResult.Win(Color.Black, WinReason.Checkmate))   => ProtoGameResultKind.WIN_CHECKMATE_B
+    case Some(GameResult.Win(Color.White, WinReason.Resignation)) => ProtoGameResultKind.WIN_RESIGN_W
+    case Some(GameResult.Win(Color.Black, WinReason.Resignation)) => ProtoGameResultKind.WIN_RESIGN_B
+    case Some(GameResult.Win(Color.White, WinReason.TimeControl)) => ProtoGameResultKind.WIN_TIME_W
+    case Some(GameResult.Win(Color.Black, WinReason.TimeControl)) => ProtoGameResultKind.WIN_TIME_B
+    case Some(GameResult.Draw(DrawReason.Stalemate))              => ProtoGameResultKind.DRAW_STALEMATE
+    case Some(GameResult.Draw(DrawReason.InsufficientMaterial))   => ProtoGameResultKind.DRAW_INSUFFICIENT
+    case Some(GameResult.Draw(DrawReason.FiftyMoveRule))          => ProtoGameResultKind.DRAW_FIFTY_MOVE
+    case Some(GameResult.Draw(DrawReason.ThreefoldRepetition))    => ProtoGameResultKind.DRAW_THREEFOLD
+    case Some(GameResult.Draw(DrawReason.Agreement))              => ProtoGameResultKind.DRAW_AGREEMENT
+
+  def fromProtoResultKind(k: ProtoGameResultKind): Option[GameResult] = k match
+    case ProtoGameResultKind.ONGOING           => None
+    case ProtoGameResultKind.WIN_CHECKMATE_W   => Some(GameResult.Win(Color.White, WinReason.Checkmate))
+    case ProtoGameResultKind.WIN_CHECKMATE_B   => Some(GameResult.Win(Color.Black, WinReason.Checkmate))
+    case ProtoGameResultKind.WIN_RESIGN_W      => Some(GameResult.Win(Color.White, WinReason.Resignation))
+    case ProtoGameResultKind.WIN_RESIGN_B      => Some(GameResult.Win(Color.Black, WinReason.Resignation))
+    case ProtoGameResultKind.WIN_TIME_W        => Some(GameResult.Win(Color.White, WinReason.TimeControl))
+    case ProtoGameResultKind.WIN_TIME_B        => Some(GameResult.Win(Color.Black, WinReason.TimeControl))
+    case ProtoGameResultKind.DRAW_STALEMATE    => Some(GameResult.Draw(DrawReason.Stalemate))
+    case ProtoGameResultKind.DRAW_INSUFFICIENT => Some(GameResult.Draw(DrawReason.InsufficientMaterial))
+    case ProtoGameResultKind.DRAW_FIFTY_MOVE   => Some(GameResult.Draw(DrawReason.FiftyMoveRule))
+    case ProtoGameResultKind.DRAW_THREEFOLD    => Some(GameResult.Draw(DrawReason.ThreefoldRepetition))
+    case ProtoGameResultKind.DRAW_AGREEMENT    => Some(GameResult.Draw(DrawReason.Agreement))
+    case _                                     => None
+
+  def toProtoGameContext(ctx: GameContext): ProtoGameContext =
+    ProtoGameContext
+      .newBuilder()
+      .addAllBoard(toProtoBoard(ctx.board))
+      .setTurn(toProtoColor(ctx.turn))
+      .setCastlingRights(
+        ProtoCastlingRights
+          .newBuilder()
+          .setWhiteKingSide(ctx.castlingRights.whiteKingSide)
+          .setWhiteQueenSide(ctx.castlingRights.whiteQueenSide)
+          .setBlackKingSide(ctx.castlingRights.blackKingSide)
+          .setBlackQueenSide(ctx.castlingRights.blackQueenSide)
+          .build(),
+      )
+      .setEnPassantSquare(ctx.enPassantSquare.map(_.toString).getOrElse(""))
+      .setHalfMoveClock(ctx.halfMoveClock)
+      .addAllMoves(ctx.moves.map(toProtoMove).asJava)
+      .setResult(toProtoResultKind(ctx.result))
+      .addAllInitialBoard(toProtoBoard(ctx.initialBoard))
+      .build()
+
+  def fromProtoGameContext(p: ProtoGameContext): GameContext =
+    val cr = p.getCastlingRights
+    GameContext(
+      board           = fromProtoBoard(p.getBoardList),
+      turn            = fromProtoColor(p.getTurn),
+      castlingRights  = DomainCastlingRights(cr.getWhiteKingSide, cr.getWhiteQueenSide, cr.getBlackKingSide, cr.getBlackQueenSide),
+      enPassantSquare = Option(p.getEnPassantSquare).filter(_.nonEmpty).flatMap(Square.fromAlgebraic),
+      halfMoveClock   = p.getHalfMoveClock,
+      moves           = p.getMovesList.asScala.flatMap(fromProtoMove).toList,
+      result          = fromProtoResultKind(p.getResult),
+      initialBoard    = fromProtoBoard(p.getInitialBoardList),
+    )

modules/rule/src/main/scala/de/nowchess/rules/grpc/RuleGrpcService.scala

@@ -0,0 +1,84 @@
+package de.nowchess.rules.grpc
+
+import de.nowchess.api.board.Square
+import de.nowchess.rules.proto.*
+import de.nowchess.rules.sets.DefaultRules
+import io.grpc.stub.StreamObserver
+import io.grpc.{Status, StatusRuntimeException}
+import io.quarkus.grpc.GrpcService
+
+// scalafix:off DisableSyntax.throw
+@GrpcService
+class RuleGrpcService extends RuleServiceGrpc.RuleServiceImplBase:
+
+  private def parseSquare(s: String): Square =
+    Square.fromAlgebraic(s).getOrElse(
+      throw Status.INVALID_ARGUMENT.withDescription(s"Invalid square: $s").asRuntimeException(),
+    )
+
+  override def candidateMoves(req: ProtoSquareRequest, resp: StreamObserver[ProtoMoveList]): Unit =
+    val ctx   = ProtoMapper.fromProtoGameContext(req.getContext)
+    val sq    = parseSquare(req.getSquare)
+    val moves = DefaultRules.candidateMoves(ctx)(sq)
+    resp.onNext(ProtoMoveList.newBuilder().addAllMoves(moves.map(ProtoMapper.toProtoMove).asInstanceOf[java.util.List[ProtoMove]]).build())
+    resp.onCompleted()
+
+  override def legalMoves(req: ProtoSquareRequest, resp: StreamObserver[ProtoMoveList]): Unit =
+    val ctx   = ProtoMapper.fromProtoGameContext(req.getContext)
+    val sq    = parseSquare(req.getSquare)
+    val moves = DefaultRules.legalMoves(ctx)(sq)
+    respond(resp, ProtoMoveList.newBuilder().addAllMoves(toJavaMoveList(moves)).build())
+
+  override def allLegalMoves(req: ProtoGameContext, resp: StreamObserver[ProtoMoveList]): Unit =
+    val moves = DefaultRules.allLegalMoves(ProtoMapper.fromProtoGameContext(req))
+    respond(resp, ProtoMoveList.newBuilder().addAllMoves(toJavaMoveList(moves)).build())
+
+  override def isCheck(req: ProtoGameContext, resp: StreamObserver[ProtoBoolResult]): Unit =
+    respond(resp, boolResult(DefaultRules.isCheck(ProtoMapper.fromProtoGameContext(req))))
+
+  override def isCheckmate(req: ProtoGameContext, resp: StreamObserver[ProtoBoolResult]): Unit =
+    respond(resp, boolResult(DefaultRules.isCheckmate(ProtoMapper.fromProtoGameContext(req))))
+
+  override def isStalemate(req: ProtoGameContext, resp: StreamObserver[ProtoBoolResult]): Unit =
+    respond(resp, boolResult(DefaultRules.isStalemate(ProtoMapper.fromProtoGameContext(req))))
+
+  override def isInsufficientMaterial(req: ProtoGameContext, resp: StreamObserver[ProtoBoolResult]): Unit =
+    respond(resp, boolResult(DefaultRules.isInsufficientMaterial(ProtoMapper.fromProtoGameContext(req))))
+
+  override def isFiftyMoveRule(req: ProtoGameContext, resp: StreamObserver[ProtoBoolResult]): Unit =
+    respond(resp, boolResult(DefaultRules.isFiftyMoveRule(ProtoMapper.fromProtoGameContext(req))))
+
+  override def isThreefoldRepetition(req: ProtoGameContext, resp: StreamObserver[ProtoBoolResult]): Unit =
+    respond(resp, boolResult(DefaultRules.isThreefoldRepetition(ProtoMapper.fromProtoGameContext(req))))
+
+  override def applyMove(req: ProtoMoveRequest, resp: StreamObserver[ProtoGameContext]): Unit =
+    val ctx  = ProtoMapper.fromProtoGameContext(req.getContext)
+    val move = ProtoMapper.fromProtoMove(req.getMove).getOrElse(
+      throw Status.INVALID_ARGUMENT.withDescription("Invalid move").asRuntimeException(),
+    )
+    respond(resp, ProtoMapper.toProtoGameContext(DefaultRules.applyMove(ctx)(move)))
+
+  override def postMoveStatus(req: ProtoGameContext, resp: StreamObserver[ProtoPostMoveStatus]): Unit =
+    val status = DefaultRules.postMoveStatus(ProtoMapper.fromProtoGameContext(req))
+    respond(
+      resp,
+      ProtoPostMoveStatus
+        .newBuilder()
+        .setIsCheckmate(status.isCheckmate)
+        .setIsStalemate(status.isStalemate)
+        .setIsInsufficientMaterial(status.isInsufficientMaterial)
+        .setIsCheck(status.isCheck)
+        .setIsThreefoldRepetition(status.isThreefoldRepetition)
+        .build(),
+    )
+
+  private def boolResult(v: Boolean): ProtoBoolResult = ProtoBoolResult.newBuilder().setValue(v).build()
+
+  private def respond[T](obs: StreamObserver[T], value: T): Unit =
+    obs.onNext(value)
+    obs.onCompleted()
+
+  private def toJavaMoveList(moves: List[de.nowchess.api.move.Move]): java.util.List[ProtoMove] =
+    import scala.jdk.CollectionConverters.*
+    moves.map(ProtoMapper.toProtoMove).asJava
+// scalafix:on DisableSyntax.throw