Revision as of 10:40, 25 July 2021

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Bitboard-Chess,
a WinBoard compliant, didactic open source chess program by Bill Jordan, written in C++ and 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 ^[1]. Bitboard serialization is done via Matt Taylor's folded BitScan ^[2], but move generation of sliding pieces is done in mailbox manner iterating over ray directions and pre-calculated target squares, radiating from the piece origin along with end of ray and blocker conditions ^[3].

Features

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 [[Bitboard Serialization|Bitboard serialization]] is done via [[Matt Taylor|Matt Taylor's]] [[BitScan#MattTaylorsFoldingtrick|folded BitScan]] <ref>[https://github.com/billjordanchess/Bitboard-Chess/blob/master/bitboard.cpp#L362 Bitboard-Chess/bitboard.cpp at master · billjordanchess/Bitboard-Chess · GitHub]</ref>,
 but [[Move Generation|move generation]] of [[Sliding Pieces|sliding pieces]] is done in [[Mailbox|mailbox]] manner
-iterating over [[Direction#RayDirections|ray directions]] and pre-calculated [[Target Square|target squares]] <ref>[https://github.com/billjordanchess/Bitboard-Chess/blob/master/gen.cpp#L94 Bitboard-Chess/gen.cpp at master · billjordanchess/Bitboard-Chess · GitHub]</ref>.
+iterating over [[Direction#RayDirections|ray directions]] and pre-calculated [[Target Square|target squares]], radiating from the [[Origin Square|piece origin]] along with end of ray and blocker conditions <ref>[https://github.com/billjordanchess/Bitboard-Chess/blob/master/gen.cpp#L94 Bitboard-Chess/gen.cpp at master · billjordanchess/Bitboard-Chess · GitHub]</ref>.
 =Features=