Editing Computer Olympiad (section)

=== Backgammon ===
{{Main|Backgammon}}
[[File:Backgammon lg.png|thumb|right|Backgammon board and checkers]]

Backgammon is a board game for two players where the checker-like playing pieces are moved according to the roll of dice; a player wins by removing all of his pieces from the board before his opponent.
{| 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
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!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}}||{{Checkmark|15}}||||||||{{Checkmark|15}}||||{{Checkmark|15}}
|}
{| class="wikitable" style="width: 780px;"
|+ 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=11|title=Backgammon (ICGA Tournaments)}}</ref>
|- align="center"
!Program||Authors
|- align="center" valign="top"
|style="width: 60px;"|1||style="width: 30px;"|1989||style="width: 80px;"|6
|style="width: 180px;" align="left"|
#[[Neurogammon]]
#Video Gammon
#Saitek Backgammon
#Mephisto Backgammon
#Backbrain
#A.I. Backgammon
|style="width: 430px;" align=left|
#Gerald Tesauro, United States
#Randall Hoogerhyde, United States
#Ossi Weiner, Netherlands
|- align="center" valign="top"
|2||1990||2
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#Video Gammon
#Prospero
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#Randall Hoogerhyde, United States
#Raymond Mills, United Kingdom
|- align="center" valign="top"
|4||1992||3
|align="left"|
#Bax
#Maestro
#Video Gammon
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#Klaus-Uwe Koschnik, Germany
#Justin Boyan, United States
#Randall Hoogerhyde, United States
|- align="center" valign="top"
|7||2002||2
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#BGBlitz<ref>{{cite web|url=http://www.bgblitz.com/|title=- Professional Backgammon Software for Windows – Mac – Linux|first=Frank|last=Berger|website=www.bgblitz.com|access-date=20 December 2017}}</ref>
#GNU Backgammon<ref>{{cite web|url=http://gnubg.org/|title=GNU Backgammon|website=gnubg.org|access-date=20 December 2017}}</ref>
|align=left|
#Frank Berger, Germany
#Massimiliano Maini, Italy; Achim Müller, Germany
|- align="center" valign="top"
|8||2003||2
|align="left"|
#BGBlitz
#GNU Backgammon
|align=left|
#Frank Berger, Germany
#Massimiliano Maini, Italy; Achim Müller, Germany
|- align="center" valign="top"
|11||2006||2
|align="left"|
#GNU Backgammon
#BGBlitz
|align=left|
#Massimiliano Maini, Italy; Achim Müller, Germany
#Frank Berger, Germany
|- align="center" valign="top"
|12||2007||3
|align="left"|
#BGBlitz
#GNU Backgammon
#MCgammon
|align=left|
#Frank Berger, Germany
#Massimiliano Maini, Italy; Achim Müller, Germany
#Guillaume Chaslot, François van Lieshout, Belgium
|- align="center" valign="top"
|16||2011||3
|align="left"|
#Palamedes<ref>Matches played without doubling cube.</ref>
#GNU Backgammon
#BGBlitz
|align=left|
#Nikos Papahristou, Greece
#Massimiliano Maini, Italy; Achim Müller, Germany
#Frank Berger, Germany
|- align="center" valign="top"
|18||2015||3
|align="left"|
#GNU Backgammon
#BGBlitz
#Palamedes
|align=left|
#Massimiliano Maini, Italy; Achim Müller, Germany
#Frank Berger, Germany
#Nikos Papahristou, Greece
|}