Difference between revisions of "Pigeon"
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'''Pigeon''',<br/> | '''Pigeon''',<br/> | ||
an original, experimental 64-bit [[UCI]] compliant chess engine by [[Stuart Riffle]], written in [[Cpp|C++]]. | 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 [ | + | Pigeon is [[:Category:Open Source|open source]], released under the [[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. | 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>. | 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>. | ||
Revision as of 16:54, 25 August 2020
Pigeon,
an original, experimental 64-bit UCI compliant chess engine by Stuart Riffle, written in C++.
Pigeon is open source, released under the MIT license.
To support SIMD by SSE2 or AVX2 instructions as well as CUDA for Nvidia GPUs, much of the critical code is branch-free.
Pigeon generates sliding piece attacks by Kogge-Stone algorithm [2].
It performs a monochrome move generation approach, color flipping the board after make move [3],
has an iterative search, and used automated tuning of evaluation weights by logistic regression.
See also
Forum Posts
- Pigeon (new open source engine) by Stuart Riffle, CCC, April 07, 2016
- New open source engine - Pigeon by Stuart Riffle, CCC, April 07, 2016
- Pigeon now using opportunistic SIMD by Stuart Riffle, CCC, April 11, 2016
- Pigeon 1.37 released by Stuart Riffle, CCC, April 19, 2016
- Pigeon 1.5.0 released by Stuart Riffle, CCC, September 01, 2016
- Pigeon 1.5.1 released by Stuart Riffle, CCC, October 25, 2016
- Pigeon is now running on the GPU by Stuart Riffle, CCC, November 02, 2016 » GPU
External Links
Chess Engine
Misc
- Pigeon (disambiguation) from Wikipedia
- Columbidae from Wikipedia
- Domestic pigeon from Wikipedia
- Doves as symbols from Wikipedia
- Fancy pigeon from Wikipedia
- Homing pigeon from Wikipedia
- Pigeon intelligence from Wikipedia
- Pigeon post from Wikipedia
- Pigeon racing from Wikipedia
References
- ↑ Soviet postage stamp from 1981 depicting Picasso and his 1949 painting La Colombe, Wikimedia Commons
- ↑ pigeon/bits.h at master · StuartRiffle/pigeon · GitHub
- ↑ pigeon/position.h at master · StuartRiffle/pigeon · GitHub
