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UCI compatible chess engine
fc0's Introduction
Chess engine compatible with UCI (universal chess interface) protocol. Currently rated around 2100 on lichess.org
- mailbox board representation (120 square vector)
- pieces are represented with numerical values (ex. white queen = 9)
- boards can be parsed from FEN
- moves are generated with a classical approach
- custom move structure (score, from, to, promote, castling, en-pas)
- moves are sorted by score (to prioritize moves for alpha-beta search)
- able to generate quiet and capture moves separately (useful in quiescence)
- basic material evaluation
- piece-square tables (optimal square for each piece type)
- piece mobility
- support for basic neural network evaluation
- multiple search algorithm implementations
- basic negamax
- probabilistic negamax
- monte-carlo tree search
- enhanced with alpha-beta and null-move pruning
- quiescence search to reduce horizon effect
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