Silverfish

UCI Chess Engine (work-in-progress)

Features

Hybrid bitboard & mailbox board representation
Magic bitboard move generation
Negamax search with alpha-beta pruning
Iterative deepening
Quiescence search
Transposition table (Zobrist hashing)
Late move reductions
Null-move pruning
Futility pruning
Killer moves & history heuristic move ordering
Lazy SMP multi-threaded search (UCI Threads option), shared transposition table with lock-striped concurrent access
NNUE Evaluation, (768->256)x2->1 architecture, vertical mirroring, trained with PyTorch
- Previously: evaluation using material counting + piece-square tables
- Self-play data generation for iterative fine-tuning

The engine itself has no external dependencies besides Go 1.22.x, so it should just work.

make run