feat: NCS-41 Bot Platform #33

Merged

Janis merged 42 commits from feat/bot into main 2026-04-19 15:52:25 +02:00

Conversation 0 Commits 42 Files Changed 127

+2531272 -429

Janis commented 2026-04-17 23:11:09 +02:00

Member

Copy Link

Copy Source

No description provided.

Janis added 42 commits 2026-04-17 23:11:09 +02:00

feat: add AlphaBetaSearch and bot implementation with difficulty levels a247eb3d0d

feat: add AlphaBetaSearch and bot implementation with difficulty levels 3b945da958

feat: implement bot functionality with difficulty levels and integrate Polyglot opening book 8e208b8a25

feat: enhance evaluation logic with mobility scoring and positional bonuses 0bc7282dfa

feat: enhance AlphaBetaSearch with parallel processing and improved move ordering 539f53b000

feat: refactor AlphaBetaSearch and ClassicalBot for improved evaluation and organization 558f43d0f6

feat: refactor AlphaBetaSearch and ClassicalBot for improved evaluation and organization 6a9ac55b31

feat: integrate NNUE bot and add Python training pipeline with weight export functionality b25be99dcf

feat: add rich console interface for NNUE training pipeline and update requirements adc2de23bc

feat: enhance nnue.py and train.py with options for existing labels and improved file handling 34945e4fb8

feat: enhance training and evaluation processes with new parameters and normalization options a5560285fd

feat: enhance training and evaluation processes with new parameters and normalization options 0bf1d52132

feat: add hybrid bot implementation and enhance NNUE training pipeline with tactical data extraction 5d4cf5f13c

feat: add metadata files for NNUE weights versions and implement burst training functionality with subsampling options 01c8a0f8fe

feat: enhance AlphaBetaSearch with move timing and improve king square detection in GameContext 75286a8773

feat: enhance AlphaBetaSearch with incremental search hash updates and improve move ordering logic 1b5759828b

feat: NCS-43 NNUE high-impact performance optimisations ... 3750931251

Implements three high-impact improvements from NCS-43:

1. Incremental L1 accumulator — L1 pre-activations are maintained
   per-ply on a stack and updated by column-add/subtract when pieces
   move, reducing L1 cost from O(768×1536) to O(pieces×1536) for root
   init and O(changed_pieces×1536) per node. Column-major weight
   transposition (l1WeightsT) makes each update sequential in memory.

2. Eval cache — a 256 K direct-mapped cache keyed by Zobrist hash
   skips the L2-L5 forward pass for positions seen during quiescence,
   where the same position often recurs across capture sequences.

3. Dynamic time allocation — NNUEBot now grants 1 500 ms in complex
   positions (> 30 legal moves) and 500 ms in nearly-terminal ones
   (< 5 moves), instead of a fixed 1 000 ms budget.

Accumulator hooks (initAccumulator, pushAccumulator, copyAccumulator,
evaluateAccumulator) are added to the Evaluation trait with no-op
defaults, so ClassicalBot and HybridBot are unaffected.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

feat: Update BotController and tests for improved bot instantiation and configuration ed26406185

feat: Improved how NNUE Evalutes 5df5a1875f

feat: Add new bot components and update game engine tests 4b52199754

feat: Implement dataset versioning and management for NNUE training data 8fb872e958

feat: Enhance NNUE evaluation with incremental updates and validation checks c88159ecec

feat: Introduce Participant trait and update GameEngine to support bot participants d6758ed8ec

feat: Implement move repetition handling for bots and update search logic to exclude repeated moves 25b0c9f2fb

feat: Add new test cases for various components including PlayerInfo, Move, and JSON parsers 227f2e4a41

feat: Allow configurable hidden layer sizes for NNUE architecture 8db2c8ca7f

feat: Add Lichess eval importer and metadata for NNUE architecture 95537bc709

feat: Refactor promotion handling to use UCI notation and improve move validation 96b8249e7e

feat: Update code style configuration to enable per-project settings 5aa1691b32

feat: Implement threefold repetition detection and update game rules f8d2858d98

feat: Refactor bot participant handling to include player information and update package structure 8ecfbd6266

feat: Add tests for bot behavior including king position, illegal moves, and game events 5a66a057b3

feat: Add tests for bot move repetition handling and hybrid bot behavior 46659cdc13

feat: Add sonarlint configuration to .gitignore e2f980df28

feat: Refactor alpha-beta search to use SearchState for repetition tracking 4f6cc2c0f8

feat: Refactor alpha-beta search to improve search parameters and quiescence handling 473c62666a

feat: Improve code formatting and readability in AlphaBetaSearch and related tests 0f6e32cf08

feat: Refactor move ordering logic to improve gain calculation and simplify exchange handling a9cafc35f8

feat: Add additional files to coverage exclusions and suppress warnings in ZobristHash and PolyglotBook c9daec475c

feat: Suppress SonarQube warnings for ZobristHash and PolyglotBook and improve coverage configuration 6fb78daacb

feat: Suppress SonarQube warnings for ZobristHash and PolyglotBook and improve coverage configuration 261dc0da49

feat: Suppress SonarQube warnings in PolyglotBook and ZobristHash by adding NOSONAR comments 9888944898

Janis merged commit dceab0875e into main 2026-04-19 15:52:25 +02:00

Janis referenced this issue from a commit 2026-04-19 15:52:26 +02:00

feat: NCS-41 Bot Platform (#33)

Janis deleted branch feat/bot 2026-04-19 15:52:32 +02:00

Janis referenced this issue from a commit 2026-04-22 09:35:38 +02:00

feat: NCS-41 Bot Platform (#33)

Sign in to join this conversation.

Reviewers

No Reviewers

Labels

No items

No Label

Milestone

No items

No Milestone

Projects

Clear projects

No project

Assignees

Clear assignees

Janis (Janis) lq64 (Leon Hermann) shosho996 (Shahd Lala) svc.teamcity

No Assignees

1 Participants

Notifications

Subscribe

Due Date

No due date set.

Dependencies

No dependencies set.

Reference: NowChess/NowChessSystems#33