Bitboard-Chess

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Bitboard-Chess,
a WinBoard compliant, didactic open source chess program by Bill Jordan, written in C++ and licensed under the licensed under the GPL version 3. Bitboard-Chess is designed to show how a chess engine might work, quite similar to Bills Bare Bones Chess aka Basic-Chess, but using bitboards . Bitboard serialization is done via Matt Taylor's folded BitScan, but move generation of sliding pieces is done in mailbox manner iterating over ray directions and pre-calculated target squares.

Features

Board Representation

• Bitboards

Search

• Iterative Deepening
• Alpha-Beta
• Transposition Table
• Move Ordering
• History Heuristic
• Extensions
• Reductions
• Quiescence Search

Evaluation

• Material
• Piece-Square Tables
• Open Files
• Pawn Structure
• King Safety

See also

• Awesome
• Bills Bare Bones Chess
• JavaScript-Chess

Publications

• Bill Jordan (2020). How to Write a Bitboard Chess Engine. amazon

External Links

• GitHub - billjordanchess/Bitboard-Chess: Simple C++ chess playing program which uses bitboards

References

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