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'''[[Main Page|Home]] * [[Tournaments and Matches|Tournaments]] * [[World Microcomputer Chess Championship]] * 11th WMCCC Vancouver 1991'''
'''[[WMCCC 1990|< Prev]] [[WMCCC 1993|Next >]]'''
[[FILE:UBC aerial view.jpg|border|right|thumb|Vancouver Campus <ref>[https://en.wikipedia.org/wiki/University_of_British_Columbia University of British Columbia from Wikipedia]</ref> ]]
The '''Eleventh World Microcomputer Chess Championship''' took place from May 1 to 9, [[Timeline#1991|1991]], at [https://en.wikipedia.org/wiki/University_of_British_Columbia University of British Columbia], [https://en.wikipedia.org/wiki/Vancouver Vancouver], [https://en.wikipedia.org/wiki/British_Columbia British Columbia], [https://en.wikipedia.org/wiki/Canada Canada] <ref>[[David Levy]] ('''1990'''). ''The 1991 World Microcomputer Chess Championship''. Entry Form. [[ICGA Journal#13_4|ICCA Journal, Vol. 13, No. 4]]</ref>.
Fifteen programs from seven countries contested for the main title, and the subsidiary titles of PC Champion and Amateur Champion. The category of Manufacturers Champion was won by default by [[Mephisto Vancouver]]. [[Ed Schroder|Ed Schröder's]] [[Gideon]] on an [[ARM2]] plugin card, operated by [[Jan Louwman]], won with 6/7 points, only losing to [[Mephisto Vancouver|Mephisto X]] in the last round. Mephisto on the other hand lost round 2 and 3 from [[The King]] and [[MChess]].
=Final Standing=
11th World Microcomputer Chess Championship, May 1991, Vancouver CAN <ref>[http://www.csvn.nl/index.php?option=com_content&view=article&id=75%3Awmcc-1991&catid=19%3Acomputer-computer&Itemid=48&lang=en WMCC 1991], [[CSVN]] tournament site</ref> <ref>[https://www.game-ai-forum.org/icga-tournaments/tournament.php?id=59 11th World Microcomputer Chess Championship - Vancouver 1991 (ICGA Tournaments)]</ref>
{| class="wikitable"
|-
! #
! Program
! CC
! 1
! 2
! 3
! 4
! 5
! 6
! 7
! P
! SOS
! SoDOS
! G
|-
! 1
| style="text-align:left;" | [[Gideon]]
! NL
| style="text-align:right;" | 15b1
| style="text-align:right;" | 12w1
| style="text-align:right;" | 4b1
| style="text-align:right;" | 2w1
| style="text-align:right;" | 6b1
| style="text-align:right;" | 5w1
| style="text-align:right;" | 3b0
! 6
| style="text-align:center;" | 27½
| style="text-align:center;" | 22½
| style="text-align:right;" | 7
|-
! 2
| style="text-align:left;" | [[MChess]]
! US
| style="text-align:right;" | 9w1
| style="text-align:right;" | 5b½
| style="text-align:right;" | 3w1
| style="text-align:right;" | 1b0
| style="text-align:right;" | 4b1
| style="text-align:right;" | 6w1
| style="text-align:right;" | 8w1
! 5½
| style="text-align:center;" | 31½
| style="text-align:center;" | 23¼
| style="text-align:right;" | 7
|-
! 3
| style="text-align:left;" | [[Mephisto|Mephisto X]] ([[Mephisto Vancouver|Vancouver]])
! GB
| style="text-align:right;" | 8b1
| style="text-align:right;" | 4w0
| style="text-align:right;" | 2b0
| style="text-align:right;" | 7w1
| style="text-align:right;" | 11b1
| style="text-align:right;" | 10w1
| style="text-align:right;" | 1w1
! 5
| style="text-align:center;" | 30½
| style="text-align:center;" | 20
| style="text-align:right;" | 7
|-
! 4
| style="text-align:left;" | [[The King]]
! NL
| style="text-align:right;" | 13w1
| style="text-align:right;" | 3b1
| style="text-align:right;" | 1w0
| style="text-align:right;" | 5b1
| style="text-align:right;" | 2w0
| style="text-align:right;" | 12b1
| style="text-align:right;" | 9w1
! 5
| style="text-align:center;" | 29½
| style="text-align:center;" | 18
| style="text-align:right;" | 7
|-
! 5
| style="text-align:left;" | [[Kasparov Sparc|Saitek-X]]
! US
| style="text-align:right;" | 7b1
| style="text-align:right;" | 2w½
| style="text-align:right;" | 6b1
| style="text-align:right;" | 4w0
| style="text-align:right;" | 10b1
| style="text-align:right;" | 1b0
| style="text-align:right;" | 12w1
! 4½
| style="text-align:center;" | 30½
| style="text-align:center;" | 16¾
| style="text-align:right;" | 7
|-
! 6
| style="text-align:left;" | [[Hiarcs]]
! GB
| style="text-align:right;" | '''bye'''
| style="text-align:right;" | 9b1
| style="text-align:right;" | 5w0
| style="text-align:right;" | 12w1
| style="text-align:right;" | 1w0
| style="text-align:right;" | 2b0
| style="text-align:right;" | 13b1
! 4
| style="text-align:center;" | 24½
| style="text-align:center;" | 8½
| style="text-align:right;" | 6
|-
! 7
| style="text-align:left;" | [[Now]]
! US
| style="text-align:right;" | 5w0
| style="text-align:right;" | 10b0
| style="text-align:right;" | 13w1
| style="text-align:right;" | 3b0
| style="text-align:right;" | '''bye'''
| style="text-align:right;" | 15w1
| style="text-align:right;" | 14w1
! 4
| style="text-align:center;" | 19
| style="text-align:center;" | 6
| style="text-align:right;" | 6
|-
! 8
| style="text-align:left;" | [[Brainstorm]]
! HU
| style="text-align:right;" | 3w0
| style="text-align:right;" | 11b1
| style="text-align:right;" | 10w½
| style="text-align:right;" | 9b½
| style="text-align:right;" | 12b½
| style="text-align:right;" | 13w1
| style="text-align:right;" | 2b0
! 3½
| style="text-align:center;" | 25½
| style="text-align:center;" | 10¼
| style="text-align:right;" | 7
|-
! 9
| style="text-align:left;" | [[Nightmare GER|Nightmare]]
! DE
| style="text-align:right;" | 2b0
| style="text-align:right;" | 6w0
| style="text-align:right;" | '''bye'''
| style="text-align:right;" | 8w½
| style="text-align:right;" | 14b1
| style="text-align:right;" | 11w1
| style="text-align:right;" | 4b0
! 3½
| style="text-align:center;" | 23½
| style="text-align:center;" | 7¼
| style="text-align:right;" | 6
|-
! 10
| style="text-align:left;" | [[Échec]]
! FR
| style="text-align:right;" | 12b0
| style="text-align:right;" | 7w1
| style="text-align:right;" | 8b½
| style="text-align:right;" | 14w1
| style="text-align:right;" | 5w0
| style="text-align:right;" | 3b0
| style="text-align:right;" | 15b1
! 3½
| style="text-align:center;" | 23
| style="text-align:center;" | 9¼
| style="text-align:right;" | 7
|-
! 11
| style="text-align:left;" | [[Patzer (K)|Patzer]]
! DE
| style="text-align:right;" | 14b1
| style="text-align:right;" | 8w0
| style="text-align:right;" | 12b0
| style="text-align:right;" | 15w1
| style="text-align:right;" | 3w0
| style="text-align:right;" | 9b0
| style="text-align:right;" | '''bye'''
! 3
| style="text-align:center;" | 18
| style="text-align:center;" | 3½
| style="text-align:right;" | 6
|-
! 12
| style="text-align:left;" | [[Cumulus]]
! FR
| style="text-align:right;" | 10w1
| style="text-align:right;" | 1b0
| style="text-align:right;" | 11w1
| style="text-align:right;" | 6b0
| style="text-align:right;" | 8w½
| style="text-align:right;" | 4w0
| style="text-align:right;" | 5b0
! 2½
| style="text-align:center;" | 29½
| style="text-align:center;" | 8¼
| style="text-align:right;" | 7
|-
! 13
| style="text-align:left;" | [[Woodpusher]]
! GB
| style="text-align:right;" | 4b0
| style="text-align:right;" | 14w½
| style="text-align:right;" | 7b0
| style="text-align:right;" | '''bye'''
| style="text-align:right;" | 15b1
| style="text-align:right;" | 8b0
| style="text-align:right;" | 6w0
! 2½
| style="text-align:center;" | 20
| style="text-align:center;" | 2¼
| style="text-align:right;" | 6
|-
! 14
| style="text-align:left;" | [[Innovation]]
! US
| style="text-align:right;" | 11w0
| style="text-align:right;" | 13b½
| style="text-align:right;" | 15w1
| style="text-align:right;" | 10b0
| style="text-align:right;" | 9w0
| style="text-align:right;" | '''bye'''
| style="text-align:right;" | 7b0
! 2½
| style="text-align:center;" | 17½
| style="text-align:center;" | 2¼
| style="text-align:right;" | 6
|-
! 15
| style="text-align:left;" | [[Centaur]]
! RU
| style="text-align:right;" | 1w0
| style="text-align:right;" | '''bye'''
| style="text-align:right;" | 14b0
| style="text-align:right;" | 11b0
| style="text-align:right;" | 13w0
| style="text-align:right;" | 7b0
| style="text-align:right;" | 10w0
! 1
| style="text-align:center;" | 21½
| style="text-align:center;" | 0
| style="text-align:right;" | 6
|}
* [https://en.wikipedia.org/wiki/ISO_3166-1 CC Country Codes]
* SOS: [https://en.wikipedia.org/wiki/Buchholz_system Sum of Opponent Scores]
* SoDOS: [https://en.wikipedia.org/wiki/Neustadtl_score Sum of Defeated Opponent Scores]
=Participants=
<ref>[[Don Beal]] ('''1991'''). ''Report on the 11th World Microcomputer Chess Championship''. [[ICGA Journal#14_2|ICCA Journal, Vol. 14, No. 2]]</ref>
{| class="wikitable"
|-
! Program
! CC
! Authors
! Processor
! MHz
! [[Nodes per second]]
! [[Languages|Language]]
|-
| [[Brainstorm]]
! HU
| [[Gyula Horváth]]
| [[68020]]
| style="text-align:right;" | 6
| style="text-align:right;" | 800
| [[Assembly]]
|-
| [[Centaur]]
! RU
| [[Victor Vikhrev]], [[Alexey Manjakhin]]
| [[x86|486]]
| style="text-align:right;" | 33
| style="text-align:right;" | 30
| [[Pascal]]
|-
| [[Cumulus]]
! FR
| [[Marc-François Baudot]], [[Jean-Christophe Weill]]
| R3200
| style="text-align:right;" | 20
| style="text-align:right;" | 1300
| [[C]]
|-
| [[Échec]]
! FR
| [[Marc-François Baudot]], [[Jean-Christophe Weill]]
| [[x86|486]]
| style="text-align:right;" | 33
| style="text-align:right;" | 4000
| [[C]]
|-
| [[Gideon]]
! NL
| [[Ed Schroder|Ed Schröder]], [[Jan Louwman]]
| [[ARM2]]
| style="text-align:right;" | 32
| style="text-align:right;" | 6800
| [[Assembly]]
|-
| [[Hiarcs]]
! GB
| [[Mark Uniacke]]
| [[SPARC]]
| style="text-align:right;" | 25
| style="text-align:right;" | 2500
| [[C]]
|-
| [[Innovation]]
! US
| [[Jeff Mallett]]
| [[68030]]
| style="text-align:right;" | 40
| style="text-align:right;" | ?
| [[C]]
|-
| [[MChess]]
! US
| [[Marty Hirsch]]
| [[x86|486]]
| style="text-align:right;" | 33
| style="text-align:right;" | 4500
| [[C]] + [[Assembly]]
|-
| [[Mephisto|Mephisto X]] ([[Mephisto Vancouver|Vancouver]])
! GB
| [[Richard Lang]]
| [[68030]]
| style="text-align:right;" | 50
| style="text-align:right;" | 10000
| [[Assembly]]
|-
| [[Nightmare GER|Nightmare]]
! DE
| [[Reinhold Gellner]], [[Gaby von Rekowski]]
| [[x86|386]]
| style="text-align:right;" | 23
| style="text-align:right;" | 1200
| [[C]]
|-
| [[Now]]
! US
| [[Mark Lefler]]
| [[x86|386]]
| style="text-align:right;" | 40
| style="text-align:right;" | 5000
| [[Pascal]]
|-
| [[Patzer (K)|Patzer]]
! DE
| [[Werner Koch]], [[Thomas Schäfer]]
| [[x86|386]]
| style="text-align:right;" | 25
| style="text-align:right;" | 1000
| [[C]]
|-
| [[Saitek|Saitek-X]]
! US
| [[Dan Spracklen]], [[Kathe Spracklen]]
| [[SPARC]]
| style="text-align:right;" | 25
| style="text-align:right;" | 10000
| [[Assembly]]
|-
| [[The King]]
! NL
| [[Johan de Koning]]
| [[ARM2]]
| style="text-align:right;" | 32
| style="text-align:right;" | 4000
| [[C]] + [[Assembly]]
|-
| [[Woodpusher]]
! GB
| [[John Hamlen]]
| [[x86|486]]
| style="text-align:right;" | 25
| style="text-align:right;" | 6000
| [[C]]
|}
* [https://en.wikipedia.org/wiki/ISO_3166-1 CC Country Codes]
=Photos=
[[FILE:wmccc1991Gideon.jpg|none|border|text-bottom]]
[[Jan Louwman]] ([[Gideon]]) and [[Berthold Seifriz]] playing or analyzing <ref>Photo by [[Gaby von Rekowski]] / [[Reinhold Gellner]], [[ICGA Journal#14_2|ICCA Journal, Vol. 14, No. 2]], pp. 91</ref>
=Titles=
* World Micro Manufacturers Champion: [[Mephisto]] by default
* World Microcomputer Chess Champion: [[Gideon]]
* World Micro Absolute Champions: [[Mephisto]] and [[Gideon]] after the play-off was drawn
* World Micro PC Champion: [[MChess]]
* World Micro Amateur Champion: [[Hiarcs]]
=Tournament Director=
* [[Michael Valvo|Mike Valvo]]
=Publications=
* [[Don Beal]] ('''1991'''). ''Report on the 11th World Microcomputer Chess Championship''. [[ICGA Journal#14_2|ICCA Journal, Vol. 14, No. 2]]
* [[Michael Valvo|Mike Valvo]] ('''1991'''). ''Results and Selected Games of the 11th World Microcomputer Chess Championship''. [[ICGA Journal#14_2|ICCA Journal, Vol. 14, No. 2]]
* [[Eric Hallsworth]] ('''1991'''). ''World Championship 1991, Vancouver''. [[Selective Search]] 35, pp. 21, [http://www.chesscomputeruk.com/SS_35.pdf pdf] hosted by [[Mike Watters]]
* [[Eric Hallsworth]] ('''1991'''). ''World Micro Games, Vancouver 1991''. [[Selective Search]] 36, pp. 11, [http://www.chesscomputeruk.com/SS_36.pdf pdf] hosted by [[Mike Watters]]
* [https://www.nytimes.com/1991/06/25/nyregion/chess-264291.html Chess] by [https://en.wikipedia.org/wiki/Robert_Byrne Robert Byrne], [https://en.wikipedia.org/wiki/The_New_York_Times New York Times], June 25, 1991 - on Chess Machine [[Gideon]] versus [[Cumulus]] <ref>[https://www.game-ai-forum.org/icga-tournaments/round.php?tournament=59&round=2&id=1 Vancouver 1991 - Chess - Round 2 - Game 1 (ICGA Tournaments)]</ref>
=Forum Posts=
* [https://groups.google.com/d/msg/rec.games.chess/luJe2WdRn8w/DB4K58wtTC0J 11th World Microcomputer Chess Championship] by Karen Richards, [[Computer Chess Forums|rec.games.chess]], May 05, 1991
=External Links=
* [https://www.game-ai-forum.org/icga-tournaments/event.php?id=33 11th World Microcomputer Chess Championship] from the [https://www.game-ai-forum.org/icga-tournaments/ ICGA Tournament Database]
* [http://www.csvn.nl/index.php?option=com_content&view=article&id=75%3Awmcc-1991&catid=19%3Acomputer-computer&Itemid=48&lang=en WMCC 1991], [[CSVN]] tournament site
* [http://chesseval.com/WorldChampion/Vancouver1991.htm XI World Microcomputer Chess Championship VANCOUVER 1991], [http://www.chesseval.com/index.html ChessEval], July 2014
* [http://www.schach-computer.info/wiki/index.php/11._WMCCC_Vancouver_1991 11. WMCCC Vancouver 1991] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info - Wiki] (German)
=References=
<references />
'''[[World Microcomputer Chess Championship|Up one level]]'''
'''[[WMCCC 1990|< Prev]] [[WMCCC 1993|Next >]]'''
[[FILE:UBC aerial view.jpg|border|right|thumb|Vancouver Campus <ref>[https://en.wikipedia.org/wiki/University_of_British_Columbia University of British Columbia from Wikipedia]</ref> ]]
The '''Eleventh World Microcomputer Chess Championship''' took place from May 1 to 9, [[Timeline#1991|1991]], at [https://en.wikipedia.org/wiki/University_of_British_Columbia University of British Columbia], [https://en.wikipedia.org/wiki/Vancouver Vancouver], [https://en.wikipedia.org/wiki/British_Columbia British Columbia], [https://en.wikipedia.org/wiki/Canada Canada] <ref>[[David Levy]] ('''1990'''). ''The 1991 World Microcomputer Chess Championship''. Entry Form. [[ICGA Journal#13_4|ICCA Journal, Vol. 13, No. 4]]</ref>.
Fifteen programs from seven countries contested for the main title, and the subsidiary titles of PC Champion and Amateur Champion. The category of Manufacturers Champion was won by default by [[Mephisto Vancouver]]. [[Ed Schroder|Ed Schröder's]] [[Gideon]] on an [[ARM2]] plugin card, operated by [[Jan Louwman]], won with 6/7 points, only losing to [[Mephisto Vancouver|Mephisto X]] in the last round. Mephisto on the other hand lost round 2 and 3 from [[The King]] and [[MChess]].
=Final Standing=
11th World Microcomputer Chess Championship, May 1991, Vancouver CAN <ref>[http://www.csvn.nl/index.php?option=com_content&view=article&id=75%3Awmcc-1991&catid=19%3Acomputer-computer&Itemid=48&lang=en WMCC 1991], [[CSVN]] tournament site</ref> <ref>[https://www.game-ai-forum.org/icga-tournaments/tournament.php?id=59 11th World Microcomputer Chess Championship - Vancouver 1991 (ICGA Tournaments)]</ref>
{| class="wikitable"
|-
! #
! Program
! CC
! 1
! 2
! 3
! 4
! 5
! 6
! 7
! P
! SOS
! SoDOS
! G
|-
! 1
| style="text-align:left;" | [[Gideon]]
! NL
| style="text-align:right;" | 15b1
| style="text-align:right;" | 12w1
| style="text-align:right;" | 4b1
| style="text-align:right;" | 2w1
| style="text-align:right;" | 6b1
| style="text-align:right;" | 5w1
| style="text-align:right;" | 3b0
! 6
| style="text-align:center;" | 27½
| style="text-align:center;" | 22½
| style="text-align:right;" | 7
|-
! 2
| style="text-align:left;" | [[MChess]]
! US
| style="text-align:right;" | 9w1
| style="text-align:right;" | 5b½
| style="text-align:right;" | 3w1
| style="text-align:right;" | 1b0
| style="text-align:right;" | 4b1
| style="text-align:right;" | 6w1
| style="text-align:right;" | 8w1
! 5½
| style="text-align:center;" | 31½
| style="text-align:center;" | 23¼
| style="text-align:right;" | 7
|-
! 3
| style="text-align:left;" | [[Mephisto|Mephisto X]] ([[Mephisto Vancouver|Vancouver]])
! GB
| style="text-align:right;" | 8b1
| style="text-align:right;" | 4w0
| style="text-align:right;" | 2b0
| style="text-align:right;" | 7w1
| style="text-align:right;" | 11b1
| style="text-align:right;" | 10w1
| style="text-align:right;" | 1w1
! 5
| style="text-align:center;" | 30½
| style="text-align:center;" | 20
| style="text-align:right;" | 7
|-
! 4
| style="text-align:left;" | [[The King]]
! NL
| style="text-align:right;" | 13w1
| style="text-align:right;" | 3b1
| style="text-align:right;" | 1w0
| style="text-align:right;" | 5b1
| style="text-align:right;" | 2w0
| style="text-align:right;" | 12b1
| style="text-align:right;" | 9w1
! 5
| style="text-align:center;" | 29½
| style="text-align:center;" | 18
| style="text-align:right;" | 7
|-
! 5
| style="text-align:left;" | [[Kasparov Sparc|Saitek-X]]
! US
| style="text-align:right;" | 7b1
| style="text-align:right;" | 2w½
| style="text-align:right;" | 6b1
| style="text-align:right;" | 4w0
| style="text-align:right;" | 10b1
| style="text-align:right;" | 1b0
| style="text-align:right;" | 12w1
! 4½
| style="text-align:center;" | 30½
| style="text-align:center;" | 16¾
| style="text-align:right;" | 7
|-
! 6
| style="text-align:left;" | [[Hiarcs]]
! GB
| style="text-align:right;" | '''bye'''
| style="text-align:right;" | 9b1
| style="text-align:right;" | 5w0
| style="text-align:right;" | 12w1
| style="text-align:right;" | 1w0
| style="text-align:right;" | 2b0
| style="text-align:right;" | 13b1
! 4
| style="text-align:center;" | 24½
| style="text-align:center;" | 8½
| style="text-align:right;" | 6
|-
! 7
| style="text-align:left;" | [[Now]]
! US
| style="text-align:right;" | 5w0
| style="text-align:right;" | 10b0
| style="text-align:right;" | 13w1
| style="text-align:right;" | 3b0
| style="text-align:right;" | '''bye'''
| style="text-align:right;" | 15w1
| style="text-align:right;" | 14w1
! 4
| style="text-align:center;" | 19
| style="text-align:center;" | 6
| style="text-align:right;" | 6
|-
! 8
| style="text-align:left;" | [[Brainstorm]]
! HU
| style="text-align:right;" | 3w0
| style="text-align:right;" | 11b1
| style="text-align:right;" | 10w½
| style="text-align:right;" | 9b½
| style="text-align:right;" | 12b½
| style="text-align:right;" | 13w1
| style="text-align:right;" | 2b0
! 3½
| style="text-align:center;" | 25½
| style="text-align:center;" | 10¼
| style="text-align:right;" | 7
|-
! 9
| style="text-align:left;" | [[Nightmare GER|Nightmare]]
! DE
| style="text-align:right;" | 2b0
| style="text-align:right;" | 6w0
| style="text-align:right;" | '''bye'''
| style="text-align:right;" | 8w½
| style="text-align:right;" | 14b1
| style="text-align:right;" | 11w1
| style="text-align:right;" | 4b0
! 3½
| style="text-align:center;" | 23½
| style="text-align:center;" | 7¼
| style="text-align:right;" | 6
|-
! 10
| style="text-align:left;" | [[Échec]]
! FR
| style="text-align:right;" | 12b0
| style="text-align:right;" | 7w1
| style="text-align:right;" | 8b½
| style="text-align:right;" | 14w1
| style="text-align:right;" | 5w0
| style="text-align:right;" | 3b0
| style="text-align:right;" | 15b1
! 3½
| style="text-align:center;" | 23
| style="text-align:center;" | 9¼
| style="text-align:right;" | 7
|-
! 11
| style="text-align:left;" | [[Patzer (K)|Patzer]]
! DE
| style="text-align:right;" | 14b1
| style="text-align:right;" | 8w0
| style="text-align:right;" | 12b0
| style="text-align:right;" | 15w1
| style="text-align:right;" | 3w0
| style="text-align:right;" | 9b0
| style="text-align:right;" | '''bye'''
! 3
| style="text-align:center;" | 18
| style="text-align:center;" | 3½
| style="text-align:right;" | 6
|-
! 12
| style="text-align:left;" | [[Cumulus]]
! FR
| style="text-align:right;" | 10w1
| style="text-align:right;" | 1b0
| style="text-align:right;" | 11w1
| style="text-align:right;" | 6b0
| style="text-align:right;" | 8w½
| style="text-align:right;" | 4w0
| style="text-align:right;" | 5b0
! 2½
| style="text-align:center;" | 29½
| style="text-align:center;" | 8¼
| style="text-align:right;" | 7
|-
! 13
| style="text-align:left;" | [[Woodpusher]]
! GB
| style="text-align:right;" | 4b0
| style="text-align:right;" | 14w½
| style="text-align:right;" | 7b0
| style="text-align:right;" | '''bye'''
| style="text-align:right;" | 15b1
| style="text-align:right;" | 8b0
| style="text-align:right;" | 6w0
! 2½
| style="text-align:center;" | 20
| style="text-align:center;" | 2¼
| style="text-align:right;" | 6
|-
! 14
| style="text-align:left;" | [[Innovation]]
! US
| style="text-align:right;" | 11w0
| style="text-align:right;" | 13b½
| style="text-align:right;" | 15w1
| style="text-align:right;" | 10b0
| style="text-align:right;" | 9w0
| style="text-align:right;" | '''bye'''
| style="text-align:right;" | 7b0
! 2½
| style="text-align:center;" | 17½
| style="text-align:center;" | 2¼
| style="text-align:right;" | 6
|-
! 15
| style="text-align:left;" | [[Centaur]]
! RU
| style="text-align:right;" | 1w0
| style="text-align:right;" | '''bye'''
| style="text-align:right;" | 14b0
| style="text-align:right;" | 11b0
| style="text-align:right;" | 13w0
| style="text-align:right;" | 7b0
| style="text-align:right;" | 10w0
! 1
| style="text-align:center;" | 21½
| style="text-align:center;" | 0
| style="text-align:right;" | 6
|}
* [https://en.wikipedia.org/wiki/ISO_3166-1 CC Country Codes]
* SOS: [https://en.wikipedia.org/wiki/Buchholz_system Sum of Opponent Scores]
* SoDOS: [https://en.wikipedia.org/wiki/Neustadtl_score Sum of Defeated Opponent Scores]
=Participants=
<ref>[[Don Beal]] ('''1991'''). ''Report on the 11th World Microcomputer Chess Championship''. [[ICGA Journal#14_2|ICCA Journal, Vol. 14, No. 2]]</ref>
{| class="wikitable"
|-
! Program
! CC
! Authors
! Processor
! MHz
! [[Nodes per second]]
! [[Languages|Language]]
|-
| [[Brainstorm]]
! HU
| [[Gyula Horváth]]
| [[68020]]
| style="text-align:right;" | 6
| style="text-align:right;" | 800
| [[Assembly]]
|-
| [[Centaur]]
! RU
| [[Victor Vikhrev]], [[Alexey Manjakhin]]
| [[x86|486]]
| style="text-align:right;" | 33
| style="text-align:right;" | 30
| [[Pascal]]
|-
| [[Cumulus]]
! FR
| [[Marc-François Baudot]], [[Jean-Christophe Weill]]
| R3200
| style="text-align:right;" | 20
| style="text-align:right;" | 1300
| [[C]]
|-
| [[Échec]]
! FR
| [[Marc-François Baudot]], [[Jean-Christophe Weill]]
| [[x86|486]]
| style="text-align:right;" | 33
| style="text-align:right;" | 4000
| [[C]]
|-
| [[Gideon]]
! NL
| [[Ed Schroder|Ed Schröder]], [[Jan Louwman]]
| [[ARM2]]
| style="text-align:right;" | 32
| style="text-align:right;" | 6800
| [[Assembly]]
|-
| [[Hiarcs]]
! GB
| [[Mark Uniacke]]
| [[SPARC]]
| style="text-align:right;" | 25
| style="text-align:right;" | 2500
| [[C]]
|-
| [[Innovation]]
! US
| [[Jeff Mallett]]
| [[68030]]
| style="text-align:right;" | 40
| style="text-align:right;" | ?
| [[C]]
|-
| [[MChess]]
! US
| [[Marty Hirsch]]
| [[x86|486]]
| style="text-align:right;" | 33
| style="text-align:right;" | 4500
| [[C]] + [[Assembly]]
|-
| [[Mephisto|Mephisto X]] ([[Mephisto Vancouver|Vancouver]])
! GB
| [[Richard Lang]]
| [[68030]]
| style="text-align:right;" | 50
| style="text-align:right;" | 10000
| [[Assembly]]
|-
| [[Nightmare GER|Nightmare]]
! DE
| [[Reinhold Gellner]], [[Gaby von Rekowski]]
| [[x86|386]]
| style="text-align:right;" | 23
| style="text-align:right;" | 1200
| [[C]]
|-
| [[Now]]
! US
| [[Mark Lefler]]
| [[x86|386]]
| style="text-align:right;" | 40
| style="text-align:right;" | 5000
| [[Pascal]]
|-
| [[Patzer (K)|Patzer]]
! DE
| [[Werner Koch]], [[Thomas Schäfer]]
| [[x86|386]]
| style="text-align:right;" | 25
| style="text-align:right;" | 1000
| [[C]]
|-
| [[Saitek|Saitek-X]]
! US
| [[Dan Spracklen]], [[Kathe Spracklen]]
| [[SPARC]]
| style="text-align:right;" | 25
| style="text-align:right;" | 10000
| [[Assembly]]
|-
| [[The King]]
! NL
| [[Johan de Koning]]
| [[ARM2]]
| style="text-align:right;" | 32
| style="text-align:right;" | 4000
| [[C]] + [[Assembly]]
|-
| [[Woodpusher]]
! GB
| [[John Hamlen]]
| [[x86|486]]
| style="text-align:right;" | 25
| style="text-align:right;" | 6000
| [[C]]
|}
* [https://en.wikipedia.org/wiki/ISO_3166-1 CC Country Codes]
=Photos=
[[FILE:wmccc1991Gideon.jpg|none|border|text-bottom]]
[[Jan Louwman]] ([[Gideon]]) and [[Berthold Seifriz]] playing or analyzing <ref>Photo by [[Gaby von Rekowski]] / [[Reinhold Gellner]], [[ICGA Journal#14_2|ICCA Journal, Vol. 14, No. 2]], pp. 91</ref>
=Titles=
* World Micro Manufacturers Champion: [[Mephisto]] by default
* World Microcomputer Chess Champion: [[Gideon]]
* World Micro Absolute Champions: [[Mephisto]] and [[Gideon]] after the play-off was drawn
* World Micro PC Champion: [[MChess]]
* World Micro Amateur Champion: [[Hiarcs]]
=Tournament Director=
* [[Michael Valvo|Mike Valvo]]
=Publications=
* [[Don Beal]] ('''1991'''). ''Report on the 11th World Microcomputer Chess Championship''. [[ICGA Journal#14_2|ICCA Journal, Vol. 14, No. 2]]
* [[Michael Valvo|Mike Valvo]] ('''1991'''). ''Results and Selected Games of the 11th World Microcomputer Chess Championship''. [[ICGA Journal#14_2|ICCA Journal, Vol. 14, No. 2]]
* [[Eric Hallsworth]] ('''1991'''). ''World Championship 1991, Vancouver''. [[Selective Search]] 35, pp. 21, [http://www.chesscomputeruk.com/SS_35.pdf pdf] hosted by [[Mike Watters]]
* [[Eric Hallsworth]] ('''1991'''). ''World Micro Games, Vancouver 1991''. [[Selective Search]] 36, pp. 11, [http://www.chesscomputeruk.com/SS_36.pdf pdf] hosted by [[Mike Watters]]
* [https://www.nytimes.com/1991/06/25/nyregion/chess-264291.html Chess] by [https://en.wikipedia.org/wiki/Robert_Byrne Robert Byrne], [https://en.wikipedia.org/wiki/The_New_York_Times New York Times], June 25, 1991 - on Chess Machine [[Gideon]] versus [[Cumulus]] <ref>[https://www.game-ai-forum.org/icga-tournaments/round.php?tournament=59&round=2&id=1 Vancouver 1991 - Chess - Round 2 - Game 1 (ICGA Tournaments)]</ref>
=Forum Posts=
* [https://groups.google.com/d/msg/rec.games.chess/luJe2WdRn8w/DB4K58wtTC0J 11th World Microcomputer Chess Championship] by Karen Richards, [[Computer Chess Forums|rec.games.chess]], May 05, 1991
=External Links=
* [https://www.game-ai-forum.org/icga-tournaments/event.php?id=33 11th World Microcomputer Chess Championship] from the [https://www.game-ai-forum.org/icga-tournaments/ ICGA Tournament Database]
* [http://www.csvn.nl/index.php?option=com_content&view=article&id=75%3Awmcc-1991&catid=19%3Acomputer-computer&Itemid=48&lang=en WMCC 1991], [[CSVN]] tournament site
* [http://chesseval.com/WorldChampion/Vancouver1991.htm XI World Microcomputer Chess Championship VANCOUVER 1991], [http://www.chesseval.com/index.html ChessEval], July 2014
* [http://www.schach-computer.info/wiki/index.php/11._WMCCC_Vancouver_1991 11. WMCCC Vancouver 1991] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info - Wiki] (German)
=References=
<references />
'''[[World Microcomputer Chess Championship|Up one level]]'''
