diff --git a/.codesight/CODESIGHT.md b/.codesight/CODESIGHT.md
index e84c141..7d74d03 100644
--- a/.codesight/CODESIGHT.md
+++ b/.codesight/CODESIGHT.md
@@ -2,7 +2,7 @@
 
 > **Stack:** raw-http | none | unknown | scala
 
-> 0 routes | 0 models | 0 components | 63 lib files | 1 env vars | 1 middleware
+> 0 routes | 0 models | 0 components | 89 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.**
 
 ---
@@ -62,11 +62,21 @@
   - function withEnPassantSquare
   - function withHalfMoveClock
   - _...4 more_
+- `modules/api/src/main/scala/de/nowchess/api/io/GameContextExport.scala` — class GameContextExport, function exportGameContext
+- `modules/api/src/main/scala/de/nowchess/api/io/GameContextImport.scala` — class GameContextImport, function importGameContext
 - `modules/api/src/main/scala/de/nowchess/api/player/PlayerInfo.scala` — class PlayerId, function apply
 - `modules/api/src/main/scala/de/nowchess/api/response/ApiResponse.scala`
   - class ApiResponse
   - function error
   - function totalPages
+- `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala`
+  - class RuleSet
+  - function candidateMoves
+  - function legalMoves
+  - function allLegalMoves
+  - function isCheck
+  - function isCheckmate
+  - _...5 more_
 - `modules/bot/python/nnue.py`
   - function get_weights_dir: ()
   - function get_data_dir: ()
@@ -171,6 +181,28 @@
   - class ZobristHash
   - function hash
   - function nextHash
+- `modules/core/src/main/scala/de/nowchess/chess/adapter/RuleSetRestAdapter.scala`
+  - class RuleSetRestAdapter
+  - function candidateMoves
+  - function legalMoves
+  - function allLegalMoves
+  - function isCheck
+  - function isCheckmate
+  - _...5 more_
+- `modules/core/src/main/scala/de/nowchess/chess/client/IoServiceClient.scala`
+  - class IoServiceClient
+  - function importFen
+  - function importPgn
+  - function exportFen
+  - function exportPgn
+- `modules/core/src/main/scala/de/nowchess/chess/client/RuleServiceClient.scala`
+  - class RuleServiceClient
+  - function candidateMoves
+  - function legalMoves
+  - function allLegalMoves
+  - function isCheck
+  - function isCheckmate
+  - _...5 more_
 - `modules/core/src/main/scala/de/nowchess/chess/command/Command.scala`
   - class Command
   - function execute
@@ -186,15 +218,27 @@
   - function getCurrentIndex
   - _...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
   - function board
   - function turn
   - function context
+  - function pendingDrawOfferBy
   - function canUndo
-  - function canRedo
-  - _...11 more_
+  - _...17 more_
+- `modules/core/src/main/scala/de/nowchess/chess/exception/ApiException.scala`
+  - class ApiException
+  - 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
@@ -216,15 +260,13 @@
   - function update
   - function generateId
 - `modules/core/src/main/scala/de/nowchess/chess/resource/GameResource.scala`
+  - class GameResource
   - function onGameEvent
   - function createGame
   - function getGame
   - function streamGame
   - function onGameEvent
-  - function resignGame
-  - _...9 more_
-- `modules/io/src/main/scala/de/nowchess/io/GameContextExport.scala` — class GameContextExport, function exportGameContext
-- `modules/io/src/main/scala/de/nowchess/io/GameContextImport.scala` — class GameContextImport, function importGameContext
+  - _...10 more_
 - `modules/io/src/main/scala/de/nowchess/io/GameFileService.scala`
   - class GameFileService
   - function saveGameToFile
@@ -255,6 +297,8 @@
 - `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
@@ -265,8 +309,24 @@
   - function importGameContext
   - function parsePgn
   - function parseAlgebraicMove
-- `modules/rule/src/main/scala/de/nowchess/rules/RuleSet.scala`
-  - class RuleSet
+- `modules/io/src/main/scala/de/nowchess/io/service/config/JacksonConfig.scala` — class JacksonConfig, function customize
+- `modules/io/src/main/scala/de/nowchess/io/service/config/NativeReflectionConfig.scala` — class NativeReflectionConfig
+- `modules/io/src/main/scala/de/nowchess/io/service/resource/IoResource.scala`
+  - class IoResource
+  - function importFen
+  - function importPgn
+  - function exportFen
+  - function exportPgn
+- `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
   - function legalMoves
   - function allLegalMoves
@@ -301,39 +361,39 @@
 
 ## Most Imported Files (change these carefully)
 
-- `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala` — imported by **64** files
-- `modules/api/src/main/scala/de/nowchess/api/move/Move.scala` — imported by **44** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Square.scala` — imported by **40** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Color.scala` — imported by **35** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Board.scala` — imported by **19** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Piece.scala` — imported by **18** files
-- `modules/api/src/main/scala/de/nowchess/api/board/PieceType.scala` — imported by **17** files
-- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala` — imported by **17** files
-- `modules/rule/src/main/scala/de/nowchess/rules/RuleSet.scala` — imported by **11** files
+- `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 **38** files
+- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala` — imported by **26** 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/rules/RuleSet.scala` — imported by **12** files
+- `modules/api/src/main/scala/de/nowchess/api/game/DrawReason.scala` — imported by **11** files
 - `modules/io/src/main/scala/de/nowchess/io/fen/FenParser.scala` — imported by **10** files
-- `modules/api/src/main/scala/de/nowchess/api/board/CastlingRights.scala` — imported by **9** files
-- `modules/api/src/main/scala/de/nowchess/api/game/DrawReason.scala` — imported by **7** files
-- `modules/io/src/main/scala/de/nowchess/io/GameContextImport.scala` — imported by **7** files
+- `modules/api/src/main/scala/de/nowchess/api/game/GameResult.scala` — imported by **9** files
+- `modules/api/src/main/scala/de/nowchess/api/io/GameContextImport.scala` — imported by **8** 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/api/src/main/scala/de/nowchess/api/player/PlayerInfo.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/player/PlayerInfo.scala` — imported by **5** files
+- `modules/api/src/main/scala/de/nowchess/api/io/GameContextExport.scala` — imported by **6** files
 - `modules/bot/src/main/scala/de/nowchess/bot/util/PolyglotBook.scala` — imported by **5** files
-- `modules/api/src/main/scala/de/nowchess/api/game/GameResult.scala` — imported by **4** files
-- `modules/bot/src/main/scala/de/nowchess/bot/bots/ClassicalBot.scala` — imported by **4** files
-- `modules/bot/src/main/scala/de/nowchess/bot/bots/classic/EvaluationClassic.scala` — imported by **4** 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/bot/src/main/scala/de/nowchess/bot/BotMoveRepetition.scala`, `modules/bot/src/main/scala/de/nowchess/bot/ai/Evaluation.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/ClassicalBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/HybridBot.scala` +59 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/test/scala/de/nowchess/api/board/BoardTest.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/bot/src/main/scala/de/nowchess/bot/BotMoveRepetition.scala` +39 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/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/api/src/test/scala/de/nowchess/api/move/MoveTest.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/classic/EvaluationClassic.scala` +35 more
-- `modules/api/src/main/scala/de/nowchess/api/board/Color.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/GameContextTest.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` +30 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` +14 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` +13 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` +12 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` +12 more
-- `modules/rule/src/main/scala/de/nowchess/rules/RuleSet.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` +6 more
-- `modules/io/src/main/scala/de/nowchess/io/fen/FenParser.scala` ← `modules/bot/src/test/scala/de/nowchess/bot/PolyglotHashTest.scala`, `modules/core/src/main/scala/de/nowchess/chess/resource/GameResource.scala`, `modules/core/src/test/scala/de/nowchess/chess/engine/EngineTestHelpers.scala`, `modules/core/src/test/scala/de/nowchess/chess/engine/GameEngineLoadGameTest.scala`, `modules/core/src/test/scala/de/nowchess/chess/engine/GameEngineNotationTest.scala` +5 more
+- `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/GameContext.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameResult.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.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` +33 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` +21 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/rules/RuleSet.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` +7 more
 
 ---
 
diff --git a/.codesight/graph.md b/.codesight/graph.md
index 57ba7eb..7f676a5 100644
--- a/.codesight/graph.md
+++ b/.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 **64** files
-- `modules/api/src/main/scala/de/nowchess/api/move/Move.scala` — imported by **44** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Square.scala` — imported by **40** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Color.scala` — imported by **35** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Board.scala` — imported by **19** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Piece.scala` — imported by **18** files
-- `modules/api/src/main/scala/de/nowchess/api/board/PieceType.scala` — imported by **17** files
-- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala` — imported by **17** files
-- `modules/rule/src/main/scala/de/nowchess/rules/RuleSet.scala` — imported by **11** files
+- `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 **38** files
+- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala` — imported by **26** 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/rules/RuleSet.scala` — imported by **12** files
+- `modules/api/src/main/scala/de/nowchess/api/game/DrawReason.scala` — imported by **11** files
 - `modules/io/src/main/scala/de/nowchess/io/fen/FenParser.scala` — imported by **10** files
-- `modules/api/src/main/scala/de/nowchess/api/board/CastlingRights.scala` — imported by **9** files
-- `modules/api/src/main/scala/de/nowchess/api/game/DrawReason.scala` — imported by **7** files
-- `modules/io/src/main/scala/de/nowchess/io/GameContextImport.scala` — imported by **7** files
+- `modules/api/src/main/scala/de/nowchess/api/game/GameResult.scala` — imported by **9** files
+- `modules/api/src/main/scala/de/nowchess/api/io/GameContextImport.scala` — imported by **8** 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/api/src/main/scala/de/nowchess/api/player/PlayerInfo.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/player/PlayerInfo.scala` — imported by **5** files
+- `modules/api/src/main/scala/de/nowchess/api/io/GameContextExport.scala` — imported by **6** files
 - `modules/bot/src/main/scala/de/nowchess/bot/util/PolyglotBook.scala` — imported by **5** files
-- `modules/api/src/main/scala/de/nowchess/api/game/GameResult.scala` — imported by **4** files
-- `modules/bot/src/main/scala/de/nowchess/bot/bots/ClassicalBot.scala` — imported by **4** files
-- `modules/bot/src/main/scala/de/nowchess/bot/bots/classic/EvaluationClassic.scala` — imported by **4** 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/bot/src/main/scala/de/nowchess/bot/BotMoveRepetition.scala`, `modules/bot/src/main/scala/de/nowchess/bot/ai/Evaluation.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/ClassicalBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/HybridBot.scala` +59 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/test/scala/de/nowchess/api/board/BoardTest.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/bot/src/main/scala/de/nowchess/bot/BotMoveRepetition.scala` +39 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/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/api/src/test/scala/de/nowchess/api/move/MoveTest.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/classic/EvaluationClassic.scala` +35 more
-- `modules/api/src/main/scala/de/nowchess/api/board/Color.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/GameContextTest.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` +30 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` +14 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` +13 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` +12 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` +12 more
-- `modules/rule/src/main/scala/de/nowchess/rules/RuleSet.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` +6 more
-- `modules/io/src/main/scala/de/nowchess/io/fen/FenParser.scala` ← `modules/bot/src/test/scala/de/nowchess/bot/PolyglotHashTest.scala`, `modules/core/src/main/scala/de/nowchess/chess/resource/GameResource.scala`, `modules/core/src/test/scala/de/nowchess/chess/engine/EngineTestHelpers.scala`, `modules/core/src/test/scala/de/nowchess/chess/engine/GameEngineLoadGameTest.scala`, `modules/core/src/test/scala/de/nowchess/chess/engine/GameEngineNotationTest.scala` +5 more
+- `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/GameContext.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameResult.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.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` +33 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` +21 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/rules/RuleSet.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` +7 more
diff --git a/.codesight/libs.md b/.codesight/libs.md
index c7da5a2..b8ce77c 100644
--- a/.codesight/libs.md
+++ b/.codesight/libs.md
@@ -53,11 +53,21 @@
   - function withEnPassantSquare
   - function withHalfMoveClock
   - _...4 more_
+- `modules/api/src/main/scala/de/nowchess/api/io/GameContextExport.scala` — class GameContextExport, function exportGameContext
+- `modules/api/src/main/scala/de/nowchess/api/io/GameContextImport.scala` — class GameContextImport, function importGameContext
 - `modules/api/src/main/scala/de/nowchess/api/player/PlayerInfo.scala` — class PlayerId, function apply
 - `modules/api/src/main/scala/de/nowchess/api/response/ApiResponse.scala`
   - class ApiResponse
   - function error
   - function totalPages
+- `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala`
+  - class RuleSet
+  - function candidateMoves
+  - function legalMoves
+  - function allLegalMoves
+  - function isCheck
+  - function isCheckmate
+  - _...5 more_
 - `modules/bot/python/nnue.py`
   - function get_weights_dir: ()
   - function get_data_dir: ()
@@ -162,6 +172,28 @@
   - class ZobristHash
   - function hash
   - function nextHash
+- `modules/core/src/main/scala/de/nowchess/chess/adapter/RuleSetRestAdapter.scala`
+  - class RuleSetRestAdapter
+  - function candidateMoves
+  - function legalMoves
+  - function allLegalMoves
+  - function isCheck
+  - function isCheckmate
+  - _...5 more_
+- `modules/core/src/main/scala/de/nowchess/chess/client/IoServiceClient.scala`
+  - class IoServiceClient
+  - function importFen
+  - function importPgn
+  - function exportFen
+  - function exportPgn
+- `modules/core/src/main/scala/de/nowchess/chess/client/RuleServiceClient.scala`
+  - class RuleServiceClient
+  - function candidateMoves
+  - function legalMoves
+  - function allLegalMoves
+  - function isCheck
+  - function isCheckmate
+  - _...5 more_
 - `modules/core/src/main/scala/de/nowchess/chess/command/Command.scala`
   - class Command
   - function execute
@@ -177,15 +209,27 @@
   - function getCurrentIndex
   - _...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
   - function board
   - function turn
   - function context
+  - function pendingDrawOfferBy
   - function canUndo
-  - function canRedo
-  - _...11 more_
+  - _...17 more_
+- `modules/core/src/main/scala/de/nowchess/chess/exception/ApiException.scala`
+  - class ApiException
+  - 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
@@ -207,15 +251,13 @@
   - function update
   - function generateId
 - `modules/core/src/main/scala/de/nowchess/chess/resource/GameResource.scala`
+  - class GameResource
   - function onGameEvent
   - function createGame
   - function getGame
   - function streamGame
   - function onGameEvent
-  - function resignGame
-  - _...9 more_
-- `modules/io/src/main/scala/de/nowchess/io/GameContextExport.scala` — class GameContextExport, function exportGameContext
-- `modules/io/src/main/scala/de/nowchess/io/GameContextImport.scala` — class GameContextImport, function importGameContext
+  - _...10 more_
 - `modules/io/src/main/scala/de/nowchess/io/GameFileService.scala`
   - class GameFileService
   - function saveGameToFile
@@ -246,6 +288,8 @@
 - `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
@@ -256,8 +300,24 @@
   - function importGameContext
   - function parsePgn
   - function parseAlgebraicMove
-- `modules/rule/src/main/scala/de/nowchess/rules/RuleSet.scala`
-  - class RuleSet
+- `modules/io/src/main/scala/de/nowchess/io/service/config/JacksonConfig.scala` — class JacksonConfig, function customize
+- `modules/io/src/main/scala/de/nowchess/io/service/config/NativeReflectionConfig.scala` — class NativeReflectionConfig
+- `modules/io/src/main/scala/de/nowchess/io/service/resource/IoResource.scala`
+  - class IoResource
+  - function importFen
+  - function importPgn
+  - function exportFen
+  - function exportPgn
+- `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
   - function legalMoves
   - function allLegalMoves
diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index 08b68c3..fde5ab0 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -10,6 +10,7 @@
           <set>
             <option value="$PROJECT_DIR$" />
             <option value="$PROJECT_DIR$/modules" />
+            <option value="$PROJECT_DIR$/modules/account" />
             <option value="$PROJECT_DIR$/modules/api" />
             <option value="$PROJECT_DIR$/modules/bot" />
             <option value="$PROJECT_DIR$/modules/core" />
diff --git a/.idea/scala_compiler.xml b/.idea/scala_compiler.xml
index f2eb6d2..369ce50 100644
--- a/.idea/scala_compiler.xml
+++ b/.idea/scala_compiler.xml
@@ -5,7 +5,7 @@
       <option name="deprecationWarnings" value="true" />
       <option name="uncheckedWarnings" value="true" />
     </profile>
-    <profile name="Gradle 2" modules="NowChessSystems.modules.bot.main,NowChessSystems.modules.bot.scoverage,NowChessSystems.modules.bot.test,NowChessSystems.modules.core.integrationTest,NowChessSystems.modules.core.main,NowChessSystems.modules.core.native-test,NowChessSystems.modules.core.quarkus-generated-sources,NowChessSystems.modules.core.quarkus-test-generated-sources,NowChessSystems.modules.core.scoverage,NowChessSystems.modules.core.test,NowChessSystems.modules.io.integrationTest,NowChessSystems.modules.io.main,NowChessSystems.modules.io.native-test,NowChessSystems.modules.io.quarkus-generated-sources,NowChessSystems.modules.io.quarkus-test-generated-sources,NowChessSystems.modules.io.scoverage,NowChessSystems.modules.io.test,NowChessSystems.modules.rule.integrationTest,NowChessSystems.modules.rule.main,NowChessSystems.modules.rule.native-test,NowChessSystems.modules.rule.quarkus-generated-sources,NowChessSystems.modules.rule.quarkus-test-generated-sources,NowChessSystems.modules.rule.scoverage,NowChessSystems.modules.rule.test,NowChessSystems.modules.ui.main,NowChessSystems.modules.ui.scoverage,NowChessSystems.modules.ui.test">
+    <profile name="Gradle 2" modules="NowChessSystems.modules.account.integrationTest,NowChessSystems.modules.account.main,NowChessSystems.modules.account.native-test,NowChessSystems.modules.account.quarkus-generated-sources,NowChessSystems.modules.account.quarkus-test-generated-sources,NowChessSystems.modules.account.scoverage,NowChessSystems.modules.account.test,NowChessSystems.modules.bot.main,NowChessSystems.modules.bot.scoverage,NowChessSystems.modules.bot.test,NowChessSystems.modules.core.integrationTest,NowChessSystems.modules.core.main,NowChessSystems.modules.core.native-test,NowChessSystems.modules.core.quarkus-generated-sources,NowChessSystems.modules.core.quarkus-test-generated-sources,NowChessSystems.modules.core.scoverage,NowChessSystems.modules.core.test,NowChessSystems.modules.io.integrationTest,NowChessSystems.modules.io.main,NowChessSystems.modules.io.native-test,NowChessSystems.modules.io.quarkus-generated-sources,NowChessSystems.modules.io.quarkus-test-generated-sources,NowChessSystems.modules.io.scoverage,NowChessSystems.modules.io.test,NowChessSystems.modules.rule.integrationTest,NowChessSystems.modules.rule.main,NowChessSystems.modules.rule.native-test,NowChessSystems.modules.rule.quarkus-generated-sources,NowChessSystems.modules.rule.quarkus-test-generated-sources,NowChessSystems.modules.rule.scoverage,NowChessSystems.modules.rule.test,NowChessSystems.modules.ui.main,NowChessSystems.modules.ui.scoverage,NowChessSystems.modules.ui.test">
       <option name="deprecationWarnings" value="true" />
       <option name="uncheckedWarnings" value="true" />
       <parameters>
diff --git a/build.gradle.kts b/build.gradle.kts
index 5127534..eb0b26c 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -42,7 +42,11 @@ val coverageExclusions = listOf(
     // JacksonConfig — Quarkus lifecycle hook, no testable logic beyond ObjectMapper registration
     "**/io/src/main/scala/de/nowchess/io/service/config/JacksonConfig.scala",
     //RuleSetRestAdapter - Quarkus integration of rule into core, only testable with Quarkus tests
-    "**/core/src/main/de/nowchess/chess/adapter/RuleSetRestAdapter.scala"
+    "**/core/src/main/de/nowchess/chess/adapter/RuleSetRestAdapter.scala",
+    // AccountResource / ChallengeResource — REST integration layer; @QuarkusTest not instrumented by Scoverage
+    "**/account/src/main/scala/de/nowchess/account/resource/**",
+    // JacksonConfig / NativeReflectionConfig — Quarkus lifecycle hooks, no testable logic
+    "**/account/src/main/scala/de/nowchess/account/config/**"
 )
 
 // Converts a Sonar-style glob to a scoverage regex (matched against full source path).
diff --git a/modules/account/src/main/resources/application.yml b/modules/account/src/main/resources/application.yml
new file mode 100644
index 0000000..092a7c9
--- /dev/null
+++ b/modules/account/src/main/resources/application.yml
@@ -0,0 +1,41 @@
+quarkus:
+  http:
+    port: 8083
+  application:
+    name: nowchess-account
+  smallrye-openapi:
+    info-title: NowChess Account Service
+    path: /openapi
+  swagger-ui:
+    always-include: true
+    path: /swagger-ui
+  datasource:
+    postgres:
+      db-kind: postgresql
+      username: ${DB_USER:nowchess}
+      password: ${DB_PASSWORD:nowchess}
+      jdbc:
+        url: ${DB_URL:jdbc:postgresql://localhost:5432/nowchess_account}
+  hibernate-orm:
+    schema-management:
+      strategy: update
+
+"%prod":
+  mp:
+    jwt:
+      verify:
+        publickey:
+          location: ${JWT_PUBLIC_KEY_PATH:keys/public.pem}
+        issuer: nowchess
+  smallrye:
+    jwt:
+      sign:
+        key:
+          location: ${JWT_PRIVATE_KEY_PATH:keys/private.pem}
+  quarkus:
+    datasource:
+      postgres:
+        active: true
+    hibernate-orm:
+      postgres:
+        active: true
\ No newline at end of file
diff --git a/modules/account/src/test/resources/application.yml b/modules/account/src/test/resources/application.yml
new file mode 100644
index 0000000..1db58d7
--- /dev/null
+++ b/modules/account/src/test/resources/application.yml
@@ -0,0 +1,31 @@
+quarkus:
+  http:
+    port: 8083
+  application:
+    name: nowchess-account
+  smallrye-openapi:
+    info-title: NowChess Account Service
+    path: /openapi
+  swagger-ui:
+    always-include: true
+    path: /swagger-ui
+  datasource:
+    db-kind: h2
+    username: sa
+    password: ""
+    jdbc:
+      url: "jdbc:h2:mem:test;DB_CLOSE_DELAY=-1"
+  hibernate-orm:
+    schema-management:
+      strategy: drop-and-create
+mp:
+  jwt:
+    verify:
+      publickey:
+        location: keys/test-public.pem
+      issuer: nowchess
+smallrye:
+  jwt:
+    sign:
+      key:
+        location: keys/test-private.pem
diff --git a/settings.gradle.kts b/settings.gradle.kts
index 9b36b4b..7c7af96 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -19,4 +19,5 @@ include(
     "modules:io",
     "modules:rule",
     "modules:bot",
+    "modules:account",
 )
\ No newline at end of file