Changes

Jump to: navigation, search

Orion

5,109 bytes added, 21:29, 10 September 2020
Created page with "'''Home * Engines * Orion''' FILE:Orion 3008 huge.jpg|border|right|thumb|240px| Orion Constellation <ref>[https://commons.wikimedia.org/wiki/File:Orion_30..."
'''[[Main Page|Home]] * [[Engines]] * Orion'''

[[FILE:Orion 3008 huge.jpg|border|right|thumb|240px| Orion Constellation <ref>[https://commons.wikimedia.org/wiki/File:Orion_3008_huge.jpg deep sky image] of the constellation [https://en.wikipedia.org/wiki/Orion_(constellation) Orion] by [https://en.wikipedia.org/wiki/User:Mouser Mouser], December 14 2004, [https://en.wikipedia.org/wiki/Wikimedia_Commons Wikimedia Commons]</ref> ]]

'''Orion''',<br/>
an [[UCI]] compliant chess engine by [[David Carteau]], written in [[C]] and first released in May 2014.
In August 2020, David Carteau published results using an own [[AVX2]] [[NNUE]] implementation so far compatible with [[Stockfish NNUE]] nets,
with a huge improvement in [[Playing Strength|playing strength]]. He is in the process to design and train his own NNUE <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=2&t=74828&start=18 Re: Orion 0.7 : NNUE experiment] by [[David Carteau]], [[CCC]], September 06, 2020</ref>.

=Features=
<ref>based on [https://orionchess.pagesperso-orange.fr/ Orion UCI chess engine]</ref>
==[[Board Representation]]==
* [[Bitboards]]
* [[Magic Bitboards#Plain|Plain Magic Bitboards]]
* [[BMI2#PEXTBitboards|BMI2 - PEXT Bitboards]]
==[[Search]]==
* [[Iterative Deepening]]
* [[Aspiration Windows]]
* [[Alpha-Beta]]
* [[Principal Variation Search]]
* [[Transposition Table]]
* [[Selectivity]]
** [[Null Move Pruning#AdaptiveNullMovePruning|Adaptive Null Move Pruning]]
** [[Reverse Futility Pruning|Static Null Move Pruning]]
** [[Late Move Reductions]]
** [[Futility Pruning]]
** [[Razoring]]
** [[Quiescence Search]]
** [[Delta Pruning]]
** [[Static Exchange Evaluation|SEE Pruning]]
* [[Move Ordering]]
** [[Hash Move]], even [[Quiet Moves]] in [[Quiescence Search|Quiescence]]
** [[Static Exchange Evaluation]]
** [[History Heuristic]]
==[[Evaluation]]==
* [[NNUE]] (0.7.nnue)
* [[Automated Tuning]] by [[Automated Tuning#LinearRegression|Linear Regression]] using [[Python]] [https://en.wikipedia.org/wiki/Scikit-learn scikit-learn] (0.6) <ref>[https://scikit-learn.org/stable/modules/linear_model.html#ridge-regression-and-classification 1.1. Linear Models — scikit-learn 0.23.2 documentation]</ref>
* [[Automated Tuning]] by [[Genetic Programming#PBIL|PBIL]] (pre 0.6)
* [[Pawn Structure]]
** [[Isolated Pawn|Isolated Pawns]] etc ...
** [[Passed Pawn|Passed Pawns]]
* [[Mobility]]
* [[Square Control]]
* [[Space]]
* [[King Safety]]
* [[King Safety#Attacking|Attacking King Zone]]
==Misc==
* [[Syzygy Bases]]

=Forum Posts=
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=52414 New free engine - Orion] by [[Graham Banks]], [[CCC]], May 24, 2014
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=59736 New Orion release : v0.3 !] by [[David Carteau]], [[CCC]], April 03, 2016
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=65455 New Orion release : v0.4 !] by [[David Carteau]], [[CCC]], October 15, 2017
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=67786 New Orion release : v0.5 !] by [[David Carteau]], [[CCC]], June 21, 2018
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=70887 New Orion release : v0.6 !] by [[David Carteau]], [[CCC]], June 01, 2019
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=74365 Orion 0.7 release] by [[David Carteau]], [[CCC]], July 04, 2020
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=74828 Orion 0.7 : NNUE experiment] by [[David Carteau]], [[CCC]], August 19, 2020

=External Links=
==Chess Engine==
* [https://orionchess.pagesperso-orange.fr/ Orion UCI chess engine]
* [http://computerchess.org.uk/ccrl/404/cgi/compare_engines.cgi?family=Orion&print=Rating+list&print=Results+table&print=LOS+table&print=Ponder+hit+table&print=Eval+difference+table&print=Comopp+gamenum+table&print=Overlap+table&print=Score+with+common+opponents Orion] in [[CCRL|CCRL Blitz]]
==Misc==
* [https://en.wikipedia.org/wiki/Orion Orion from Wikipedia]
* [https://en.wikipedia.org/wiki/Orion_(mythology) Orion (mythology) from Wikipedia]
* [https://en.wikipedia.org/wiki/Orion_(constellation) Orion (constellation) from Wikipedia]
* [https://en.wikipedia.org/wiki/Orion_(comics) Orion (comics) from Wikipedia]
* [https://en.wikipedia.org/wiki/Orion_(sculpture) Orion (sculpture) from Wikipedia] [[University of Michigan]]
* [[:Category:Steps Ahead|Steps Ahead]] - Orion, [https://www.discogs.com/de/Steps-Ahead-Yin-Yang/release/2727533 Yin-Yang] (1992), [https://en.wikipedia.org/wiki/YouTube YouTube] Video
: lineup: [[:Category:Mike Mainieri|Mike Mainieri]], [[:Category:Steve Smith|Steve Smith]], [https://www.discogs.com/de/artist/486643-Jeff-Andrews Jeff Andrews], [https://en.wikipedia.org/wiki/Bendik_Hofseth Bendik Hofseth], [https://en.wikipedia.org/wiki/Rachel_Z Rachel Z]
: {{#evu:https://www.youtube.com/watch?v=LtKlyGBVwoM|alignment=left|valignment=top}}

=References=
<references />
'''[[Engines|Up one level]]'''
[[Category:UCI]]
[[Category:PC]]
[[Category:Windows]]
[[Category:X64]]
[[Category:NNUE]]
[[Category:Astronomy]]
[[Category:Mythology]]
[[Category:Steps Ahead]]
[[Category:Mike Mainieri]]
[[Category:Steve Smith]]

Navigation menu