WMCCC 1991

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Vancouver Campus

The Eleventh World Microcomputer Chess Championship took place from May 1 to 9, 1991, at University of British Columbia, Vancouver, British Columbia, Canada .

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 Schröder's Gideon on an ARM2 plugin card, operated by Jan Louwman, won with 6/7 points, only losing to 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

#	Program	CC	1	2	3	4	5	6	7	P	SOS	SoDOS	G
1	Gideon	NL	15b1	12w1	4b1	2w1	6b1	5w1	3b0	6	27½	22½	7
2	MChess	US	9w1	5b½	3w1	1b0	4b1	6w1	8w1	5½	31½	23¼	7
3	Mephisto X (Vancouver)	GB	8b1	4w0	2b0	7w1	11b1	10w1	1w1	5	30½	20	7
4	The King	NL	13w1	3b1	1w0	5b1	2w0	12b1	9w1	5	29½	18	7
5	Saitek-X	US	7b1	2w½	6b1	4w0	10b1	1b0	12w1	4½	30½	16¾	7
6	HIARCS	GB	bye	9b1	5w0	12w1	1w0	2b0	13b1	4	24½	8½	6
7	Now	US	5w0	10b0	13w1	3b0	bye	15w1	14w1	4	19	6	6
8	Brainstorm	HU	3w0	11b1	10w½	9b½	12b½	13w1	2b0	3½	25½	10¼	7
9	Nightmare	DE	2b0	6w0	bye	8w½	14b1	11w1	4b0	3½	23½	7¼	6
10	Échec	FR	12b0	7w1	8b½	14w1	5w0	3b0	15b1	3½	23	9¼	7
11	Patzer	DE	14b1	8w0	12b0	15w1	3w0	9b0	bye	3	18	3½	6
12	Cumulus	FR	10w1	1b0	11w1	6b0	8w½	4w0	5b0	2½	29½	8¼	7
13	Woodpusher	GB	4b0	14w½	7b0	bye	15b1	8b0	6w0	2½	20	2¼	6
14	Innovation	US	11w0	13b½	15w1	10b0	9w0	bye	7b0	2½	17½	2¼	6
15	Centaur	RU	1w0	bye	14b0	11b0	13w0	7b0	10w0	1	21½	0	6

• CC Country Codes
• SOS: Sum of Opponent Scores
• SoDOS: Sum of Defeated Opponent Scores

Participants

Program	CC	Authors	Processor	MHz	Nodes per Second	Language
Brainstorm	HU	Gyula Horváth	68020	6	800	Assembly
Centaur	RU	Victor Vikhrev, Alexey Manjakhin	486	33	30	Pascal
Cumulus	FR	Marc-François Baudot, Jean-Christophe Weill	R3200	20	1300	C
Échec	FR	Marc-François Baudot, Jean-Christophe Weill	486	33	4000	C
Gideon	NL	Ed Schröder, Jan Louwman	ARM2	32	6800	Assembly
HIARCS	GB	Mark Uniacke	SPARC	25	2500	C
Innovation	US	Jeff Mallett	68030	40	?	C
MChess	US	Marty Hirsch	486	33	4500	C + Assembly
Mephisto X (Vancouver)	GB	Richard Lang	68030	50	10000	Assembly
Nightmare	DE	Reinhold Gellner, Gaby von Rekowski	386	23	1200	C
Now	US	Mark Lefler	386	40	5000	Pascal
Patzer	DE	Werner Koch, Thomas Schäfer	386	25	1000	C
Saitek-X	US	Dan Spracklen, Kathe Spracklen	SPARC	25	10000	Assembly
The King	NL	Johan de Koning	ARM2	32	4000	C + Assembly
Woodpusher	GB	John Hamlen	486	25	6000	C

• CC Country Codes

Photos

Jan Louwman (Gideon) and Berthold Seifriz playing or analyzing

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

• Mike Valvo

Publications

• Don Beal (1991). Report on the 11th World Microcomputer Chess Championship. ICCA Journal, Vol. 14, No. 2
• Mike Valvo (1991). Results and Selected Games of the 11th World Microcomputer Chess Championship. ICCA Journal, Vol. 14, No. 2
• Mark Lefler (1991). 1991 World Microcomputer Chess Championship. Computer Chess Reports 1991, Vol. 2, No. 1, pp. 2-3
• Eric Hallsworth (1991). World Championship 1991, Vancouver. Selective Search 35, pp. 21, pdf hosted by Mike Watters
• Eric Hallsworth (1991). World Micro Games, Vancouver 1991. Selective Search 36, pp. 11, pdf hosted by Mike Watters
• Chess by Robert Byrne, New York Times, June 25, 1991 - on Chess Machine Gideon versus Cumulus

Forum Posts

• 11th World Microcomputer Chess Championship by Karen Richards, rec.games.chess, May 05, 1991

External Links

• 11th World Microcomputer Chess Championship from the ICGA Tournament Database
• WMCC 1991, CSVN tournament site
• XI World Microcomputer Chess Championship VANCOUVER 1991, ChessEval, July 2014
• 11. WMCCC Vancouver 1991 from Schachcomputer.info - Wiki (German)

References

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