sameshi

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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.

core

1. 120 cell mailbox board
2. negamax search
3. alpha beta pruning
4. material only eval
5. capture first move ordering
6. full legal move validation (check / mate / stalemate)

Note

not implemented: castling, en passant, promotion, repetition, 50-move rule.

strength

~1170 Elo (95% CI: 1110-1225)
240 games vs stockfish (1320-1600 levels)
fixed depth 5, constrained rules, max 60 plies.