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'''Pigeon''',<br/>
an original, experimental 64-bit [[UCI]] compliant chess engine by [[Stuart Riffle]], written in [[Cpp|C++]].
Pigeon is [[:Category:Open Source|open source]], released under the [https://en.wikipedia.org/wiki/MIT_License [Massachusetts Institute of Technology#License|MIT license]].
To support [[SIMD and SWAR Techniques|SIMD]] by [[SSE2]] or [[AVX2]] instructions as well as [https://en.wikipedia.org/wiki/CUDA CUDA] for [[Nvidia]] [[GPU|GPUs]], much of the critical code is branch-free.
Pigeon generates [[Sliding Piece Attacks|sliding piece attacks]] by [[Kogge-Stone Algorithm|Kogge-Stone algorithm]] <ref>[https://github.com/StuartRiffle/pigeon/blob/master/src/bits.h pigeon/bits.h at master · StuartRiffle/pigeon · GitHub]</ref>.
=See also=
* [[Falcon]]
* [[Jaglavak]]
=Forum Posts=
* [http://www.talkchess.com/forum/viewtopic.php?t=59900 Pigeon 1.37 released] by [[Stuart Riffle]], [[CCC]], April 19, 2016
* [http://www.talkchess.com/forum/viewtopic.php?t=61299 Pigeon 1.5.0 released] by [[Stuart Riffle]], [[CCC]], September 01, 2016
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=61840&p=690810 Pigeon 1.5.1 released] by [[Stuart Riffle]], [[CCC]], October 25, 2016
* [http://www.talkchess.com/forum/viewtopic.php?t=61925 Pigeon is now running on the GPU] by [[Stuart Riffle]], [[CCC]], November 02, 2016 » [[GPU]]
* [https://en.wikipedia.org/wiki/Pigeon_post Pigeon post from Wikipedia]
* [https://en.wikipedia.org/wiki/Pigeon_racing Pigeon racing from Wikipedia]
* [[:Category:Cymande|Cymande]] - [https://en.wikipedia.org/wiki/Cymande_(album) Dove] (1972), [https://en.wikipedia.org/wiki/YouTube YouTube] Video
: {{#evu:https://www.youtube.com/watch?v=YcL8SvyKtE4|alignment=left|valignment=top}}
=References=
'''[[Engines|Up one level]]'''
[[Category:Open Source]]
[[Category:MIT]]
[[Category:UCI]]
[[Category:GPU]]
[[Category:Pablo Picasso]]
[[Category:Stamp]]
[[Category:Cymande]]
