A minimal chess engine supporting a constrained subset of the game.
sameshi.h: 1.95 KB
The readable version of the code can be found here.
- 120 cell mailbox board
- negamax search
- alpha beta pruning
- material only eval
- capture first move ordering
- full legal move validation (check / mate / stalemate)
Note
not implemented: castling, en passant, promotion, repetition, 50-move rule.
~1170 Elo (95% CI: 1110-1225)
240 games vs stockfish (1320-1600 levels)
fixed depth 5, constrained rules, max 60 plies.