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Oct 15, 2017
**[[Home]] * [[Engines]] * Orion** || [[image:Orion_Nebula_-_Hubble_2006_mosaic_18000.jpg link="https://en.wikipedia.org/wiki/File:Orion_Nebula_-_Hubble_2006_mosaic_18000.jpg"]] ||~ || **Orion**, an [[UCI]] compliant chess engine written by [[David Carteau]], first released in May 2014. Orion is a [[Bitboards|bitboard]] engine and applies [[Magic Bitboards#Plain|plain magic bitboards]] to determine [[Sliding Piece Attacks|sliding piece attacks]]. [[Search]] is [[Principal Variation Search|PVS]] [[Alpha-Beta|alpha-beta]] with [[Transposition Table|transposition table]], [[Quiescence Search|quiescence search]], [[Futility pruning|futility pruning]], [[Null move pruning|null move pruning]] and [[Late Move Reductions|LMR]] inside an [[Iterative Deepening|iterative deepening]] framework with [[Aspiration Windows|aspiration windows]]. The rudimentary [[Evaluation|evaluation]] considers [[Mobility|mobility]] and [[Pawn Structure|pawn structure]] with focus on [[Passed Pawn|passed pawns]], and has some basic [[Endgame|endgame]] knowledge <ref>[[http://orionchess.pagesperso-orange.fr/|Orion UCI chess engine]]</ref>. || || Orion Nebula <ref>In one of the most detailed astronomical images ever produced, [[https://en.wikipedia.org/wiki/NASA|NASA]]/[[https://en.wikipedia.org/wiki/European_Space_Agency|ESA's]] [[https://en.wikipedia.org/wiki/Hubble_Space_Telescope|Hubble Space Telescope]] captured an unprecedented look at the Orion Nebula. This extensive study took 105 Hubble orbits to complete. All imaging instruments aboard the telescope were used simultaneously to study [[https://en.wikipedia.org/wiki/Orion_%28constellation%29|Orion]]. The Advanced Camera mosaic covers approximately the apparent angular size of the full moon, January 11, 2006 [[https://en.wikipedia.org/wiki/Orion_Nebula|Orion Nebula from Wikipedia]], [[http://hubblesite.org/newscenter/archive/releases/2006/01/|HubbleSite - NewsCenter - Hubble Panoramic View of Orion Nebula Reveals Thousands of Stars (01/11/2006) - Introduction]]</ref> ||~ ||^ || [[toc]] =See also= * [[Various Classifications#Astronomy|Astronomy]] * [[Dark Horse]] * [[Various Classifications#Mythology|Mythology]] * [[Nebula]] * [[Search Instability]] =Forum Posts= * [[http://www.talkchess.com/forum/viewtopic.php?t=52414|New free engine - Orion]] by [[Graham Banks]], [[CCC]], May 24, 2014 * [[http://www.talkchess.com/forum/viewtopic.php?t=52819|Orion 0.2 64-bit Gauntlets for CCRL 40/40]] by [[Graham Banks]], [[CCC]], June 30, 2014 * [[http://www.talkchess.com/forum/viewtopic.php?t=59736|New Orion release : v0.3 !]] by [[David Carteau]], [[CCC]], April 03, 2016 * [[http://www.talkchess.com/forum/viewtopic.php?t=65455|New Orion release : v0.4 !]] by [[David Carteau]], [[CCC]], October 15, 2017 =External Links= ==Chess Engine== * [[http://orionchess.pagesperso-orange.fr/|Orion UCI chess engine]] * [[http://computerchess.org.uk/ccrl/4040/cgi/engine_details.cgi?print=Details&each_game=1&eng=Orion%200.2%2064-bit#Orion_0_2_64-bit|Orion 0.2 64-bit]] in [[CCRL|CCRL 40/40]] ==Misc== * [[https://en.wikipedia.org/wiki/Orion|Orion (disambiguation) from Wikipedia]] * [[https://en.wikipedia.org/wiki/Orion_%28mythology%29|Orion (mythology) from Wikipedia]] * [[https://en.wikipedia.org/wiki/Orion_%28constellation%29|Orion (constellation) from Wikipedia]] * [[https://en.wikipedia.org/wiki/Orion_Nebula|Orion Nebula from Wikipedia]] * [[https://en.wikipedia.org/wiki/Orion_Arm|Orion Arm from Wikipedia]] * [[https://en.wikipedia.org/wiki/Orion_%28satellite%29|Orion (satellite) from Wikipedia]] * [[https://en.wikipedia.org/wiki/Orion_%28spacecraft%29|Orion (spacecraft) from Wikipedia]] * [[https://en.wikipedia.org/wiki/Raumpatrouille_%E2%80%93_Die_phantastischen_Abenteuer_des_Raumschiffes_Orion|Raumpatrouille – Die phantastischen Abenteuer des Raumschiffes Orion - Wikipedia]] * [[Videos#Metallica|Metallica]] - [[https://en.wikipedia.org/wiki/Master_of_Puppets#Track_listing|Orion]], [[https://en.wikipedia.org/wiki/Seoul|Seoul]] [[https://en.wikipedia.org/wiki/Olympic_Stadium_%28Seoul%29#Concerts|Olympic Stadium]], [[http://www.metallica.com/tour/aug-15-2006-seoul.asp|August 15, 2006]], [[https://en.wikipedia.org/wiki/YouTube|YouTube]] Video > [[media type="custom" key="26094886"]] =References= <references /> =What links here?= [[include page="Orion" component="backlinks" limit="40"]] **[[Engines|Up one Level]]**