Orion

an UCI compliant chess engine written by David Carteau, first released in May 2014. Orion is a bitboard engine and applies plain magic bitboards to determine sliding piece attacks. Search is PVS alpha-beta with transposition table, quiescence search, futility pruning, null move pruning and LMR inside an iterative deepening framework with aspiration windows. The rudimentary evaluation considers mobility and pawn structure with focus on passed pawns, and has some basic endgame knowledge. || toc =See also=
 * 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**,
 * Orion Nebula ||~ ||^ ||
 * Astronomy
 * Dark Horse
 * Mythology
 * Nebula
 * Search Instability

=Forum Posts=
 * [|New free engine - Orion] by Graham Banks, CCC, May 24, 2014
 * [|Orion 0.2 64-bit Gauntlets for CCRL 40/40] by Graham Banks, CCC, June 30, 2014
 * [|New Orion release : v0.3 !] by David Carteau, CCC, April 03, 2016
 * [|New Orion release : v0.4 !] by David Carteau, CCC, October 15, 2017

=External Links=

Chess Engine

 * [|Orion UCI chess engine]
 * [|Orion 0.2 64-bit] in CCRL 40/40

Misc
> media type="custom" key="26094886"
 * [|Orion (disambiguation) from Wikipedia]
 * [|Orion (mythology) from Wikipedia]
 * [|Orion (constellation) from Wikipedia]
 * [|Orion Nebula from Wikipedia]
 * [|Orion Arm from Wikipedia]
 * [|Orion (satellite) from Wikipedia]
 * [|Orion (spacecraft) from Wikipedia]
 * [|Raumpatrouille – Die phantastischen Abenteuer des Raumschiffes Orion - Wikipedia]
 * Metallica - [|Orion], [|Seoul] [|Olympic Stadium], [|August 15, 2006], [|YouTube] Video

=References= =What links here?= include page="Orion" component="backlinks" limit="40"
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