Editing Computer Olympiad (section)

===Chess===
{{Main|Chess}}
[[File:ChessStartingPosition.jpg|thumb|right|Chess board and pieces]]
Chess is a two-player board game played on a checkered game-board with 64 squares arranged in an eight-by-eight grid. Each player begins with 16 pieces of varying characteristics, the objective being to capture one's opponent's king piece.

Many computer-versus-computer events are held beyond those of the Computer Olympiad.<ref>Other computer-versus-computer events in chess:
* [[World Computer Chess Championship]]
** [[World Computer Chess Championship#World Chess Software Championship|World Chess Software Championship]]
** [[World Computer Chess Championship#World Microcomputer Chess Championship|World Microcomputer Chess Championship]]
** [[World Computer Speed Chess Championship]]
* [[North American Computer Chess Championship]]
* [[Dutch Open Computer Chess Championship]]
* [[Thoresen Chess Engines Competition]]
* [[International Paderborn Computer Chess Championship]]
* [[Internet Computer Chess Tournament]]</ref>
{| class="wikitable"
|+ Events held by Olympiad and year
|- align="center"
!1||2||3||4||5||6||7||8||9||10||11||12||13||14||15||16||17||18
|- align="center"
!1989||1990||1991||1992||2000||2001||2002||2003||2004||2005||2006||2007||2008||2009||2010||2011||2013||2015
|- align="center"
||{{Checkmark|15}}||{{Checkmark|15}}||{{Checkmark|15}}||{{Checkmark|15}}|||||||||||||||||||||{{Checkmark|15}}||||||||{{Checkmark|15}}
|}
{| class="wikitable" style="width: 1000px;"
|+ Participants and results
|-
!rowspan=2|Olympiad||rowspan=2|Year||rowspan=2|Number of<br />participants||colspan=2|Ranking<ref>{{cite web|url=https://www.game-ai-forum.org/icga-tournaments/game.php?id=1|title=Chess (ICGA Tournaments)}}</ref>
|- align="center"
!Program||Authors
|- align="center" valign="top"
|style="width: 60px;"|1||style="width: 30px;"|1989||style="width: 80px;"|9
|style="width: 160px;" align="left"|
#Rebel
#Mephisto
#Fidelity X
#Pandix
#Chess Player 2150
#Hiarcs 4.1
#Échec 1.5
#E6P
#Woodpusher
|style="width: 670px;" align=left|
#Ed Schroder, Jan Louwman, Netherlands
#Richard Lang, United Kingdom
#Kathe Spracklen, Dan Spracklen, United States
#Gyula Horvath, Hungary
#Chris Whittington, United Kingdom
#Mark Uniacke, Harvey Williamson, Eric Hallsworth, United Kingdom; Sebastian Bohme, Germany
#Marc-François Baudot, Jean-Christophe Weill, France
#John Hamlen, United Kingdom
|- align="center" valign="top"
|2||1990||11
|align="left"|
#Mephisto
#Rebel
#Zugzwang
#Kaissa
#Échec
#Woodpusher
#Brainstorm
#Chess Player 2150
#Hiarcs
#Nightmare (D)
#Chess Guru
|align=left|
#Richard Lang, United Kingdom
#Ed Schroder, Jan Louwman, Netherlands
#Rainer Feldmann, Peter Mysliwietz, Heiner Matthias, Germany
#Mikhail Donskoy, Vladimir Aralzarov, Alexander Ushkov, USSR
#Marc-François Baudot, Jean-Christophe Weill, France
#John Hamlen, United Kingdom
#Gyula Horvath, Hungary
#Chris Whittington, United Kingdom
#Mark Uniacke, Harvey Williamson, Eric Hallsworth, United Kingdom; Sebastian Bohme, Germany
#Reinhold Gellner, Gaby von Rekowski, Germany
#Joël Rivat, France
|- align="center" valign="top"
|3||1991||7
|align="left"|
#Chessmachine WK
#Chessmachine King
#Chess Player 2175
#Nightmare NL
#Nimzo
#Dappet
#Touch
|align=left|
#Ed Schroder, Netherlands
#Johan de Koning, Netherlands
#Chris Whittington, United Kingdom
#Joost Buijs, Netherlands
#Chrilly Donninger, Austria
#Dap Hartmann, Peter Kouwenhoven, Netherlands
#Jos Uiterwijk, Netherlands
|- align="center" valign="top"
|4||1992||7
|align="left"|{{ordered list
|1=Genesis
|item2_value=1|2=The King
|item3_value=1|3=Hiarcs 6.72
|item4_value=4|4=Woodpusher
|5=Duck
|6=Touch
|7=Ananse}}
|align=left|{{ordered list
|1=Eric van Riet Paap, Netherlands
|item2_value=1|2=Johan de Koning, Netherlands
|item3_value=1|3=Mark Uniacke, Harvey Williamson, Eric Hallsworth, United Kingdom; Sebastian Bohme, Germany
|item4_value=4|4=John Hamlen, United Kingdom
|5=Dennis Breuker, Netherlands
|6=Jos Uiterwijk, Netherlands
|7=Walter Bannerman, Switzerland}}
|- align="center" valign="top"
|14||2009||6
|align="left"|
#Rybka (disqualified)
#Shredder<ref>{{cite web|url=http://www.shredderchess.com/|title=Shredder Computer Chess Download|website=www.shredderchess.com|access-date=20 December 2017}}</ref>
#[[Deep Sjeng]]
#Pandix
#Joker
#Equinox
|align=left|
#Vasik Rajlich, United Kingdom
#Stefan Meyer-Kahlen, Germany; Sandro Necchi, Italy
#[[Gian-Carlo Pascutto]], Belgium; Erdogan Günes, Turkey/Germany
#Gyula Horváth, Hungary
#Harm Geert Mueller, Netherlands
#Gian Carlo Delli Colli, Stefano Rocchi, Italy; Harry Schnapp, Germany
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