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a version of [[Clubfoot]], the [[UCI]] [[:Category:Open Source Engines|open source chess engine]] written by [[Shawn Chidester]] in [[Cpp|C++]], that uses [[Bitboards|bitboards]] <ref>[https://github.com/zd3nik/Bitfoot/blob/master/README.md Bitfoot/README.md at master · zd3nik/Bitfoot · GitHub]</ref>. The [[Search|search]] mechanics of this engine are identical to those used in Clubfoot. The differences are [[Board Representation|board representation]], [[Move Generation|move generation]], and [[Evaluation|positional evaluation]]. Bitfoot uses bitboard for board representaion, Clubfoot uses [[0x88]] board representation. Move generation is strongly tied to board representation so move generation between the two engines is implicitly different. Positional evaluation in Bitfoot takes advantage of the capabilities enabled by using bitboards. So Bitfoot's positional evaluation is much more advanced than Clubfoot's. That being said, Bitfoot's positional evaluation is still relatively dump compared to many of today's top engines.

There are further versions of the routines leaving distinct sets of attacked blocker (and possible [[Captures|capture]] targets) or attacked empty squares, target of [[Quiet Moves|quiet moves]]. In a February 2020 [[CCC]] discussion, [[Martin Sedlak]] came up with a similar idea <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=7&t=73082 scan-cut slider attack generation] by [[Martin Sedlak]], [[CCC]], February 13, 2020</ref>.

* [https://en.wikipedia.org/wiki/Brecker_Brothers Brecker Brothers] - Above and Below, ..., from [https://en.wikipedia.org/wiki/Return_of_the_Brecker_Brothers#Return_of_the_Brecker_Brothers_%E2%80%93_Live_in_Barcelona_(VHS) Return of the Brecker Brothers], [https://en.wikipedia.org/wiki/Barcelona Barcelona], 1992, [https://en.wikipedia.org/wiki/YouTube YouTube] Video: [[Videos#MichaelBrecker:Category:Michael Brecker|Michael Brecker]], [[Videos#RandyBrecker:Category:Randy Brecker|Randy Brecker]], [[Videos#MikeStern:Category:Mike Stern|Mike Stern]], [[Videos#DennisChambers:Category:Dennis Chambers|Dennis Chambers]], [https://en.wikipedia.org/wiki/George_Whitty George Whitty], [https://en.wikipedia.org/wiki/James_Genus James Genus]: {{#evu:https://www.youtube.com/watch?v=MdtjIw7Of-EAbRiCy6rXsE|alignment=left|valignment=top}}

[[Category:EngineOpen Source]][[Category:UCI]][[Category:X86]][[Category:X64]][[Category:PC]][[Category:Windows]][[Category:Linux]][[Category:Open SourceMichael Brecker]][[Category:Randy Brecker]][[Category:Dennis Chambers]][[Category:UCIMike Stern]]