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Scorpio

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==Evaluation==
Scorpio's [[Evaluation|evaluation]] includes following features and techniques <ref>[https://github.com/dshawul/Scorpio/blob/master/eval.cpp Scorpio/eval.cpp at master · dshawul/Scorpio · GitHub]</ref> :
* [[NNUE]] (3.0.9)
* [[Candidate Passed Pawn]]
* [[Evaluation Hash Table]]
==ScorpioNN==
The [[Neural Networks|neural network]] version of Scorpio '''2.9.0''' (2019) works using '''[[Scorpio#Bitbases|egbbdll''' ]] shared library <ref>[https://github.com/dshawul/egbbdll GitHub - dshawul/egbbdll: Probing code for scorpio bitbases]</ref> that provides neural network inference via [https://en.wikipedia.org/wiki/TensorFlow TensorFlow] and/or ''TensorRT'' <ref>[https://developer.nvidia.com/tensorrt NVIDIA TensorRT | NVIDIA Developer]</ref> backends <ref>[https://github.com/dshawul/Scorpio#nns GitHub - dshawul/Scorpio: Scorpio chess engine - Neural Networks (NNs)]</ref>. ==ScorpioNNUE==With the the advent of [[NNUE]] and its huge success in [[Stockfish NNUE]], [[CFish#NNUE|CFish NNUE]] and other engines, [[Daniel Shawul]] added NNUE support à la CFish into his [[Scorpio#Bitbases|egbbdll]] probing library <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=7&t=75400&start=22 Re: Hacking around CFish NNUE] by [[Daniel Shawul]], [[CCC]], October 15, 2020</ref> <ref>[https://github.com/dshawul/nnue-probe GitHub - dshawul/nnue-probe]</ref>, and reported more than 400 Elo out of his implementation with a shared library with Scorpio '''3.0.9''' <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=7&t=75415&start=3 Re: How to scale stockfish NNUE score?] by [[Daniel Shawul]], [[CCC]], October 17, 2020</ref>.
=See also=
* [[BBC#NNUE|BBC NNUE]]
* [[DanChess]]
* [[Nebiyu]]
=Dedicated Namesake=
* [http://www.talkchess.com/forum/viewtopic.php?t=18497 Scorpio 2.0 Windows x64 build available] by [[Jim Ablett]], [[CCC]], December 22, 2007
* [http://www.talkchess.com/forum/viewtopic.php?t=18506 Scorpio 64 bit questions] by [[Denis Mendoza|Denis P. Mendoza]], [[CCC]], December 23, 2007
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=4&t=49618 Interesting Scorpio design] by [[Kerwin Medina]], [[Computer Chess Forums|Winboard Forum]], November 05, 2008 » [[Iterative Search]]
* [http://www.talkchess.com/forum/viewtopic.php?t=24146 Scorpio 202 Under Linux Resolved] by [[Joshua Shriver]], [[CCC]], October 03, 2008
==2010 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=66032 Scorpio 2.7.9] by [[Daniel Shawul]], [[CCC]], December 16, 2017
'''2018'''
* [http://www.talkchess.com/forum/viewtopic.php?t=66414 Alpha-Beta as a rollouts algorithm] by [[Daniel Shawul]], [[CCC]], January 25, 2018 » [[Alpha-Beta]], [[MCαβ]], [[Monte-Carlo Tree Search]]
* [http://www.talkchess.com/forum/viewtopic.php?t=66552 Scorpio 2.8] by [[Daniel Shawul]], [[CCC]], February 10, 2018
* [http://www.talkchess.com/forum/viewtopic.php?t=66886 comparing minimax and averaging MCTS with alphabeta rollouts] by [[Daniel Shawul]], [[CCC]], March 20, 2018 » [[Monte-Carlo Tree Search]]
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=71575 Scorpio 3.0] by [[Daniel Shawul]], [[CCC]], August 16, 2019
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=72018 Scorpio 3.0.2] by [[Werner Schüle]], [[CCC]], October 06, 2019
==2020 ...==
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=75400&start=22 Re: Hacking around CFish NNUE] by [[Daniel Shawul]], [[CCC]], October 15, 2020
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=75415&start=3 Re: How to scale stockfish NNUE score?] by [[Daniel Shawul]], [[CCC]], October 17, 2020
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=77348 NNUE scoring (egbb lib)] by [[Michael Hoffmann|Desperado]], [[CCC]], May 19, 2021 » [[NNUE]],[[#ScorpioNNUE|Scorpio NNUE]]
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=77503&start=55 Re: will Tcec allow Stockfish with a Leela net to play?] by [[Connor McMonigle]], [[CCC]], June 17, 2021 » [[NNUE]]
: [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=77503&start=63 Re: will Tcec allow Stockfish with a Leela net to play?] by [[Daniel Shawul]], [[CCC]], June 18, 2021
* [https://www.talkchess.com/forum3/viewtopic.php?f=7&t=75506&start=40 Re: NNUE Question - King Placements] by [[Daniel Shawul]], July 01, 2021 » [[#ScorpioNNUE|ScorpioNNUE]]
=External Links=
* [http://sites.google.com/site/dshawul/home Scorpio Chess and Nebiyu Alien]
* [https://github.com/dshawul/Scorpio dshawul/Scorpio · GitHub]
* [https://github.com/dshawul/egbbdll GitHub - dshawul/egbbdll: Probing code for scorpio bitbases]
* [https://github.com/dshawul/nn-probe GitHub - dshawul/nn-probe: Library for probing neural networks]
* [https://github.com/dshawul/nnue-probe GitHub - dshawul/nnue-probe: for probing NNUE]
* [http://wbec-ridderkerk.nl/html/details1/Scorpio.html Engine: Scorpio] from [[WBEC|WBEC Ridderkerk]]
* [http://www.linuxchess.org/2010/03/update_scorpio_2-5_debian_package/ Update: scorpio 2.5 debian package (unofficial)], [http://www.linuxchess.org/ Linux and Chess], March 13, 2010
* [http://www.chessgames.com/perl/chessplayer?pid=111050 The chess games of Scorpio] from [http://www.chessgames.com/index.html chessgames.com]
==Misc==
[[Category:WinBoard]]
[[Category:XBoard]]
[[Category:NN]]
[[Category:NNUE]]
[[Category:MCTS]]
[[Category:X86]]
[[Category:X64]]
[[Category:GPU]]
[[Category:PC]]
[[Category:Windows]]
[[Category:Linux]]
[[Category:Mac]]
[[Category:Arthropod]]

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