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'''[[Main Page|Home]] * [[Tournaments and Matches|Tournaments]] * [[ACM North American Computer Chess Championship]] * ACM 1991'''
'''[[ACM 1990|< Prev]] [[ACM 1993|Next >]]'''
[[FILE:Doubletree.jpg|border|right|thumb|link=http://doubletree3.hilton.com/en/hotels/new-mexico/doubletree-by-hilton-hotel-albuquerque-ALBSMDT/index.html| Hotel DoubleTree by Hilton <ref>[http://doubletree3.hilton.com/en/hotels/new-mexico/doubletree-by-hilton-hotel-albuquerque-ALBSMDT/index.html DoubleTree Albuquerque by the University of New Mexico]</ref> ]]
[[ACM|ACM's]] '''22nd North American Computer Chess Championship''' (NACCC), alongside the [https://en.wikipedia.org/wiki/ACM/IEEE_Supercomputing_Conference ACM/IEEE Supercomputing Conference], was held November 17-20, [[Timeline#1991|1991]] at the Doubletree Hotel, [https://en.wikipedia.org/wiki/Albuquerque%2C_New_Mexico Albuquerque], [https://en.wikipedia.org/wiki/New_Mexico New Mexico], USA.
=Final Standing=
<ref>[http://www.csvn.nl/index.php/historie/computer-computer/104-acm-1991 ACM 1991] [[CSVN]] site</ref>
{| class="wikitable"
|-
! #
! Program
! CC
! 1
! 2
! 3
! 4
! 5
! P
! SOS
! SoDOS
|-
! 1
| style="text-align:left;" | [[Deep Thought|Deep Thought II]]
! US
| style="text-align:right;" | 7w1
| style="text-align:right;" | 2b1
| style="text-align:right;" | 5w1
| style="text-align:right;" | 3b1
| style="text-align:right;" | 6w1
! 5
| style="text-align:center;" | 14½
| style="text-align:center;" | 14½
|-
! 2
| style="text-align:left;" | [[MChess|M-Chess]]
! US
| style="text-align:right;" | 12b1
| style="text-align:right;" | 1w0
| style="text-align:right;" | 8w1
| style="text-align:right;" | 9b1
| style="text-align:right;" | 5w1
! 4
| style="text-align:center;" | 12
| style="text-align:center;" | 7
|-
! 3
| style="text-align:left;" | [[Cray Blitz]]
! US
| style="text-align:right;" | 9w1
| style="text-align:right;" | 8b½
| style="text-align:right;" | 6w½
| style="text-align:right;" | 1w0
| style="text-align:right;" | 7b1
! 3
| style="text-align:center;" | 14½
| style="text-align:center;" | 7
|-
! 4
| style="text-align:left;" | [[Mephisto]]
! GB
| style="text-align:right;" | 8b0
| style="text-align:right;" | 10w1
| style="text-align:right;" | 7b0
| style="text-align:right;" | 11w1
| style="text-align:right;" | 9w1
! 3
| style="text-align:center;" | 10
| style="text-align:center;" | 5
|-
! 5
| style="text-align:left;" | [[Hitech]]
! US
| style="text-align:right;" | 10b1
| style="text-align:right;" | 6w1
| style="text-align:right;" | 1b0
| style="text-align:right;" | 7w½
| style="text-align:right;" | 2b0
! 2½
| style="text-align:center;" | 16
| style="text-align:center;" | 5¾
|-
! 6
| style="text-align:left;" | [[ChessMachine]] [[Gideon|Schroder]]
! NL
| style="text-align:right;" | 11w1
| style="text-align:right;" | 5b0
| style="text-align:right;" | 3b½
| style="text-align:right;" | 8w1
| style="text-align:right;" | 1b0
! 2½
| style="text-align:center;" | 14
| style="text-align:center;" | 5
|-
! 7
| style="text-align:left;" | [[Zarkov]]
! US
| style="text-align:right;" | 1b0
| style="text-align:right;" | 12w1
| style="text-align:right;" | 4w1
| style="text-align:right;" | 5b½
| style="text-align:right;" | 3w0
! 2½
| style="text-align:center;" | 13½
| style="text-align:center;" | 4¼
|-
! 8
| style="text-align:left;" | [[Socrates]]
! US
| style="text-align:right;" | 4w1
| style="text-align:right;" | 3w½
| style="text-align:right;" | 2b0
| style="text-align:right;" | 6b0
| style="text-align:right;" | 12w1
! 2½
| style="text-align:center;" | 12½
| style="text-align:center;" | 4½
|-
! 9
| style="text-align:left;" | [[BP]]
! US
| style="text-align:right;" | 3b0
| style="text-align:right;" | 11b1
| style="text-align:right;" | 10w1
| style="text-align:right;" | 2w0
| style="text-align:right;" | 4b0
! 2
| style="text-align:center;" | 13
| style="text-align:center;" | 3
|-
! 10
| style="text-align:left;" | [[Lachex]]
! US
| style="text-align:right;" | 5w0
| style="text-align:right;" | 4b0
| style="text-align:right;" | 9b0
| style="text-align:right;" | 12w1
| style="text-align:right;" | 11b1
! 2
| style="text-align:center;" | 8½
| style="text-align:center;" | 1
|-
! 11
| style="text-align:left;" | [[Bebe]]
! US
| style="text-align:right;" | 6b0
| style="text-align:right;" | 9w0
| style="text-align:right;" | 12b1
| style="text-align:right;" | 4b0
| style="text-align:right;" | 10w0
! 1
| style="text-align:center;" | 9½
| style="text-align:center;" | 0
|-
! 12
| style="text-align:left;" | [[Delicate Brute]]
! GB
| style="text-align:right;" | 2w0
| style="text-align:right;" | 7b0
| style="text-align:right;" | 11w0
| style="text-align:right;" | 10b0
| style="text-align:right;" | 8b0
! 0
| style="text-align:center;" | 12
| style="text-align:center;" | 0
|}
* [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>[[Danny Kopec]], [[Monroe Newborn]], [[Michael Valvo]] ('''1992'''). ''The 22d Annual ACM International Chess Championship''. in [http://www.computerhistory.org/chess/full_record.php?iid=doc-431614f6cc6e9 The 23rd ACM International Computer Chess Championship] from [[The Computer History Museum]], [http://archive.computerhistory.org/projects/chess/related_materials/text/3-1%20and%203-2%20and%203-3%20and%204-3.1993_23rd_ACM_ICCC/1993%20ICCC.062303066.sm.pdf pdf]</ref>
{| class="wikitable"
|-
! Program
! CC
! Team
! Hardware
! Language
|-
| style="text-align:left;" | [[Bebe]]
! US
| [[Tony Scherzer]], [[Linda Scherzer]]
| SYS-10 [https://en.wikipedia.org/wiki/Bit_slicing bit slice] hardware
| [[Assembly]]
|-
| style="text-align:left;" | [[BP]]
! US
| [[Robert Cullum]]
| [[IBM PC]] [[x86|486/33]]
| [[C]], [[Assembly]]
|-
| style="text-align:left;" | [[ChessMachine]] [[Gideon|Schroder]]
! NL
| [[Ed Schroder|Ed Schröder]], [[Jan Louwman]]
| [[ARM2]] 31 MHz
|-
| style="text-align:left;" | [[Cray Blitz]]
! US
| [[Robert Hyatt]], [[Albert Gower]]
| [[Cray X-MP#YMP|Cray Y-MP-8]]
| [[Fortran]], [[C]], [[Assembly]]
|-
| style="text-align:left;" | [[Deep Thought|Deep Thought II]]
! US
| [[Feng-hsiung Hsu]], [[Murray Campbell]],<br/>[[Joe Hoane]], [[Jerry Brody]]
| [https://en.wikipedia.org/?title=RS/6000#Type_7013 RS/6000 550] &<br/>24 custom chess processors
| [[C]], [https://en.wikipedia.org/wiki/Microcode Microcode]
|-
| style="text-align:left;" | [[Delicate Brute]]
! GB
| [[Don Beal]]
| [[Sun#4|Sun-4]]
|
|-
| style="text-align:left;" | [[Hitech]]
! US
| [[Carl Ebeling]], [[Hans Berliner]],<br/>[[Chris McConnell]]
| [[Sun#4|Sun-4]] &<br/>special chess hardware
| [https://en.wikipedia.org/wiki/Microcode Microcode], [[Assembly]]
|-
| style="text-align:left;" | [[Lachex]]
! US
| [[Tony Warnock]], [[Burton Wendroff]]
| [[Cray X-MP#YMP|Cray Y-MP ZE]]
| [[Fortran]], [[Assembly]]
|-
| style="text-align:left;" | [[MChess|M-Chess]]
! US
| [[Marty Hirsch]]
| [[IBM PC]] [[x86|486]]
| [[C]], [[Assembly]]
|-
| style="text-align:left;" | [[Mephisto]]
! GB
| [[Richard Lang]]
| [[68030]]
| [[Assembly]]
|-
| style="text-align:left;" | [[Socrates]]
! US
| [[Don Dailey]], [[Larry Kaufman]]
| [[IBM PC]] [[x86|486/33]]
| [[Assembly]]
|-
| style="text-align:left;" | [[Zarkov]]
! US
| [[John Stanback]]
| [https://en.wikipedia.org/wiki/HP_9000#Series_700 HP 9000/732]
| [[C]]
|}
* [https://en.wikipedia.org/wiki/ISO_3166-1 CC Country Codes]
=Photos=
[[FILE:ACM1991.jpg|none|border|text-bottom]]
Playing Hall, [[Jaap van den Herik]] talking with [[Marty Hirsch]] <ref>Photo by Terry D. Moore, [[ACM]] Photographer of the event, [[ICGA Journal#14_4|ICCA Journal, Vol. 14, No. 4]], pp. 225</ref>
=<span id="KnightPromotion"></span>Knight Promotion=
As recently mentioned by [[Robert Hyatt]] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=46893&postdays=0&postorder=asc&topic_view=flat&start=18 Re: KPK bitbase] by [[Robert Hyatt]], [[CCC]], January 18, 2013</ref> , [[Lachex]] didn't notice the [[Promotions#MinorPromotion|knight minor promotion]] with 48... Qe4 versus [[Mephisto]]:
<pre>
[Event "ACM 1991"]
[Site "Albuquerque USA"]
[Date "1991.11.12"]
[Round "2"]
[White "Mephisto"]
[Black "Lachex"]
[Result "1-0"]
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6
9.Nbd2 Nc5 10.c3 d4 11.Bxe6 Nxe6 12.cxd4 Ncxd4 13.Ne4 Be7 14.Be3 Nf5 15.Qc2
O-O 16.Nf6+ Bxf6 17.Qxf5 Be7 18.Rfd1 Qc8 19.Rd2 c5 20.Rad1 Qc6 21.b3 Rad8
22.h3 c4 23.bxc4 bxc4 24.Nd4 Nxd4 25.Rxd4 c3 26.Rc1 Ba3 27.Rc2 Bb2 28.Qe4
Qe6 29.Ra4 Rd1+ 30.Kh2 Rfd8 31.Rc4 Rc8 32.Rxc8+ Qxc8 33.a4 Ra1 34.Bb6 Qe8
35.a5 Ra4 36.Qd5 Rb4 37.Qd6 Rc4 38.Kg1 h6 39.Qd3 Ra4 40.Qd6 Re4 41.Bc7 Re1+
42.Kh2 Qc8 43.Qb6 Qf5 44.Qb8+ Kh7 45.e6 Qxc2 46.exf7 Ba3 47.Qg8+ Kg6 48.Qe8
Qe4 49.f8=N+ Kf6 50.Nd7+ Kg5 1-0
</pre>
Game and short analyze on Lichess.org : [https://en.lichess.org/AcIqnmki]
=Where is Computer Chess Going?=
A technical session titled ''Where is Computer Chess Going'' was moderated by [[Tony Marsland]], with [[Hans Berliner]], [[Monroe Newborn]], [[Murray Campbell]], [[Robert Levinson]] and [[Jaap van den Herik]] attending as panelist <ref>[[Garth Courtois Jr.]] ('''1991'''). ''Where is Computer Chess Going?'' [[ICGA Journal#14_4|ICCA Journal, Vol. 14, No. 4]]</ref> . At one point the discussion went on [[Brute-Force|brute strength]] versus [[Pruning|trimming]] techniques - Campbell replied that both approaches will eventually succeed. [[Larry Kaufman]] commented from the audience that [[Selectivity|selective]] [[Search|searches]] outperform full width on comparable hardware. [[Don Dailey]] mentioned that one main goal is to beat the World Champion. He asked "How long will it take to cross the extra distance and play a perfect game?". Berliner replied, "Centuries! A perfect game is a science-fiction dream". Further, Robert Levinson gave a presentation of his [[Morph]] project.
=Tournament Director=
* [[Michael Valvo|Mike Valvo]]
* [[Danny Kopec]] (Assistant)
=Publications=
==Tournament==
* [[Don Beal]] ('''1991'''). ''Report on the 22nd ACM International Computer Chess Championship''. [[ICGA Journal#14_4|ICCA Journal, Vol. 14, No. 4]]
* [[Danny Kopec]], [[Monroe Newborn]], [[Michael Valvo]] ('''1992'''). ''The 22d Annual ACM International Chess Championship'', in [http://www.computerhistory.org/chess/full_record.php?iid=doc-431614f6cc6e9 The 23rd ACM International Computer Chess Championship] from [[The Computer History Museum]], [http://archive.computerhistory.org/projects/chess/related_materials/text/3-1%20and%203-2%20and%203-3%20and%204-3.1993_23rd_ACM_ICCC/1993%20ICCC.062303066.sm.pdf pdf]
==Technical Session==
* [[Garth Courtois Jr.]] ('''1991'''). ''Where is Computer Chess Going?'' [[ICGA Journal#14_4|ICCA Journal, Vol. 14, No. 4]]
=External Links=
* [http://www.csvn.nl/index.php/historie/computer-computer/104-acm-1991 ACM 1991] [[CSVN]] site
{{ACM Include}}
=References=
<references />
'''[[ACM North American Computer Chess Championship|Up one level]]'''
'''[[ACM 1990|< Prev]] [[ACM 1993|Next >]]'''
[[FILE:Doubletree.jpg|border|right|thumb|link=http://doubletree3.hilton.com/en/hotels/new-mexico/doubletree-by-hilton-hotel-albuquerque-ALBSMDT/index.html| Hotel DoubleTree by Hilton <ref>[http://doubletree3.hilton.com/en/hotels/new-mexico/doubletree-by-hilton-hotel-albuquerque-ALBSMDT/index.html DoubleTree Albuquerque by the University of New Mexico]</ref> ]]
[[ACM|ACM's]] '''22nd North American Computer Chess Championship''' (NACCC), alongside the [https://en.wikipedia.org/wiki/ACM/IEEE_Supercomputing_Conference ACM/IEEE Supercomputing Conference], was held November 17-20, [[Timeline#1991|1991]] at the Doubletree Hotel, [https://en.wikipedia.org/wiki/Albuquerque%2C_New_Mexico Albuquerque], [https://en.wikipedia.org/wiki/New_Mexico New Mexico], USA.
=Final Standing=
<ref>[http://www.csvn.nl/index.php/historie/computer-computer/104-acm-1991 ACM 1991] [[CSVN]] site</ref>
{| class="wikitable"
|-
! #
! Program
! CC
! 1
! 2
! 3
! 4
! 5
! P
! SOS
! SoDOS
|-
! 1
| style="text-align:left;" | [[Deep Thought|Deep Thought II]]
! US
| style="text-align:right;" | 7w1
| style="text-align:right;" | 2b1
| style="text-align:right;" | 5w1
| style="text-align:right;" | 3b1
| style="text-align:right;" | 6w1
! 5
| style="text-align:center;" | 14½
| style="text-align:center;" | 14½
|-
! 2
| style="text-align:left;" | [[MChess|M-Chess]]
! US
| style="text-align:right;" | 12b1
| style="text-align:right;" | 1w0
| style="text-align:right;" | 8w1
| style="text-align:right;" | 9b1
| style="text-align:right;" | 5w1
! 4
| style="text-align:center;" | 12
| style="text-align:center;" | 7
|-
! 3
| style="text-align:left;" | [[Cray Blitz]]
! US
| style="text-align:right;" | 9w1
| style="text-align:right;" | 8b½
| style="text-align:right;" | 6w½
| style="text-align:right;" | 1w0
| style="text-align:right;" | 7b1
! 3
| style="text-align:center;" | 14½
| style="text-align:center;" | 7
|-
! 4
| style="text-align:left;" | [[Mephisto]]
! GB
| style="text-align:right;" | 8b0
| style="text-align:right;" | 10w1
| style="text-align:right;" | 7b0
| style="text-align:right;" | 11w1
| style="text-align:right;" | 9w1
! 3
| style="text-align:center;" | 10
| style="text-align:center;" | 5
|-
! 5
| style="text-align:left;" | [[Hitech]]
! US
| style="text-align:right;" | 10b1
| style="text-align:right;" | 6w1
| style="text-align:right;" | 1b0
| style="text-align:right;" | 7w½
| style="text-align:right;" | 2b0
! 2½
| style="text-align:center;" | 16
| style="text-align:center;" | 5¾
|-
! 6
| style="text-align:left;" | [[ChessMachine]] [[Gideon|Schroder]]
! NL
| style="text-align:right;" | 11w1
| style="text-align:right;" | 5b0
| style="text-align:right;" | 3b½
| style="text-align:right;" | 8w1
| style="text-align:right;" | 1b0
! 2½
| style="text-align:center;" | 14
| style="text-align:center;" | 5
|-
! 7
| style="text-align:left;" | [[Zarkov]]
! US
| style="text-align:right;" | 1b0
| style="text-align:right;" | 12w1
| style="text-align:right;" | 4w1
| style="text-align:right;" | 5b½
| style="text-align:right;" | 3w0
! 2½
| style="text-align:center;" | 13½
| style="text-align:center;" | 4¼
|-
! 8
| style="text-align:left;" | [[Socrates]]
! US
| style="text-align:right;" | 4w1
| style="text-align:right;" | 3w½
| style="text-align:right;" | 2b0
| style="text-align:right;" | 6b0
| style="text-align:right;" | 12w1
! 2½
| style="text-align:center;" | 12½
| style="text-align:center;" | 4½
|-
! 9
| style="text-align:left;" | [[BP]]
! US
| style="text-align:right;" | 3b0
| style="text-align:right;" | 11b1
| style="text-align:right;" | 10w1
| style="text-align:right;" | 2w0
| style="text-align:right;" | 4b0
! 2
| style="text-align:center;" | 13
| style="text-align:center;" | 3
|-
! 10
| style="text-align:left;" | [[Lachex]]
! US
| style="text-align:right;" | 5w0
| style="text-align:right;" | 4b0
| style="text-align:right;" | 9b0
| style="text-align:right;" | 12w1
| style="text-align:right;" | 11b1
! 2
| style="text-align:center;" | 8½
| style="text-align:center;" | 1
|-
! 11
| style="text-align:left;" | [[Bebe]]
! US
| style="text-align:right;" | 6b0
| style="text-align:right;" | 9w0
| style="text-align:right;" | 12b1
| style="text-align:right;" | 4b0
| style="text-align:right;" | 10w0
! 1
| style="text-align:center;" | 9½
| style="text-align:center;" | 0
|-
! 12
| style="text-align:left;" | [[Delicate Brute]]
! GB
| style="text-align:right;" | 2w0
| style="text-align:right;" | 7b0
| style="text-align:right;" | 11w0
| style="text-align:right;" | 10b0
| style="text-align:right;" | 8b0
! 0
| style="text-align:center;" | 12
| style="text-align:center;" | 0
|}
* [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>[[Danny Kopec]], [[Monroe Newborn]], [[Michael Valvo]] ('''1992'''). ''The 22d Annual ACM International Chess Championship''. in [http://www.computerhistory.org/chess/full_record.php?iid=doc-431614f6cc6e9 The 23rd ACM International Computer Chess Championship] from [[The Computer History Museum]], [http://archive.computerhistory.org/projects/chess/related_materials/text/3-1%20and%203-2%20and%203-3%20and%204-3.1993_23rd_ACM_ICCC/1993%20ICCC.062303066.sm.pdf pdf]</ref>
{| class="wikitable"
|-
! Program
! CC
! Team
! Hardware
! Language
|-
| style="text-align:left;" | [[Bebe]]
! US
| [[Tony Scherzer]], [[Linda Scherzer]]
| SYS-10 [https://en.wikipedia.org/wiki/Bit_slicing bit slice] hardware
| [[Assembly]]
|-
| style="text-align:left;" | [[BP]]
! US
| [[Robert Cullum]]
| [[IBM PC]] [[x86|486/33]]
| [[C]], [[Assembly]]
|-
| style="text-align:left;" | [[ChessMachine]] [[Gideon|Schroder]]
! NL
| [[Ed Schroder|Ed Schröder]], [[Jan Louwman]]
| [[ARM2]] 31 MHz
|-
| style="text-align:left;" | [[Cray Blitz]]
! US
| [[Robert Hyatt]], [[Albert Gower]]
| [[Cray X-MP#YMP|Cray Y-MP-8]]
| [[Fortran]], [[C]], [[Assembly]]
|-
| style="text-align:left;" | [[Deep Thought|Deep Thought II]]
! US
| [[Feng-hsiung Hsu]], [[Murray Campbell]],<br/>[[Joe Hoane]], [[Jerry Brody]]
| [https://en.wikipedia.org/?title=RS/6000#Type_7013 RS/6000 550] &<br/>24 custom chess processors
| [[C]], [https://en.wikipedia.org/wiki/Microcode Microcode]
|-
| style="text-align:left;" | [[Delicate Brute]]
! GB
| [[Don Beal]]
| [[Sun#4|Sun-4]]
|
|-
| style="text-align:left;" | [[Hitech]]
! US
| [[Carl Ebeling]], [[Hans Berliner]],<br/>[[Chris McConnell]]
| [[Sun#4|Sun-4]] &<br/>special chess hardware
| [https://en.wikipedia.org/wiki/Microcode Microcode], [[Assembly]]
|-
| style="text-align:left;" | [[Lachex]]
! US
| [[Tony Warnock]], [[Burton Wendroff]]
| [[Cray X-MP#YMP|Cray Y-MP ZE]]
| [[Fortran]], [[Assembly]]
|-
| style="text-align:left;" | [[MChess|M-Chess]]
! US
| [[Marty Hirsch]]
| [[IBM PC]] [[x86|486]]
| [[C]], [[Assembly]]
|-
| style="text-align:left;" | [[Mephisto]]
! GB
| [[Richard Lang]]
| [[68030]]
| [[Assembly]]
|-
| style="text-align:left;" | [[Socrates]]
! US
| [[Don Dailey]], [[Larry Kaufman]]
| [[IBM PC]] [[x86|486/33]]
| [[Assembly]]
|-
| style="text-align:left;" | [[Zarkov]]
! US
| [[John Stanback]]
| [https://en.wikipedia.org/wiki/HP_9000#Series_700 HP 9000/732]
| [[C]]
|}
* [https://en.wikipedia.org/wiki/ISO_3166-1 CC Country Codes]
=Photos=
[[FILE:ACM1991.jpg|none|border|text-bottom]]
Playing Hall, [[Jaap van den Herik]] talking with [[Marty Hirsch]] <ref>Photo by Terry D. Moore, [[ACM]] Photographer of the event, [[ICGA Journal#14_4|ICCA Journal, Vol. 14, No. 4]], pp. 225</ref>
=<span id="KnightPromotion"></span>Knight Promotion=
As recently mentioned by [[Robert Hyatt]] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=46893&postdays=0&postorder=asc&topic_view=flat&start=18 Re: KPK bitbase] by [[Robert Hyatt]], [[CCC]], January 18, 2013</ref> , [[Lachex]] didn't notice the [[Promotions#MinorPromotion|knight minor promotion]] with 48... Qe4 versus [[Mephisto]]:
<pre>
[Event "ACM 1991"]
[Site "Albuquerque USA"]
[Date "1991.11.12"]
[Round "2"]
[White "Mephisto"]
[Black "Lachex"]
[Result "1-0"]
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6
9.Nbd2 Nc5 10.c3 d4 11.Bxe6 Nxe6 12.cxd4 Ncxd4 13.Ne4 Be7 14.Be3 Nf5 15.Qc2
O-O 16.Nf6+ Bxf6 17.Qxf5 Be7 18.Rfd1 Qc8 19.Rd2 c5 20.Rad1 Qc6 21.b3 Rad8
22.h3 c4 23.bxc4 bxc4 24.Nd4 Nxd4 25.Rxd4 c3 26.Rc1 Ba3 27.Rc2 Bb2 28.Qe4
Qe6 29.Ra4 Rd1+ 30.Kh2 Rfd8 31.Rc4 Rc8 32.Rxc8+ Qxc8 33.a4 Ra1 34.Bb6 Qe8
35.a5 Ra4 36.Qd5 Rb4 37.Qd6 Rc4 38.Kg1 h6 39.Qd3 Ra4 40.Qd6 Re4 41.Bc7 Re1+
42.Kh2 Qc8 43.Qb6 Qf5 44.Qb8+ Kh7 45.e6 Qxc2 46.exf7 Ba3 47.Qg8+ Kg6 48.Qe8
Qe4 49.f8=N+ Kf6 50.Nd7+ Kg5 1-0
</pre>
Game and short analyze on Lichess.org : [https://en.lichess.org/AcIqnmki]
=Where is Computer Chess Going?=
A technical session titled ''Where is Computer Chess Going'' was moderated by [[Tony Marsland]], with [[Hans Berliner]], [[Monroe Newborn]], [[Murray Campbell]], [[Robert Levinson]] and [[Jaap van den Herik]] attending as panelist <ref>[[Garth Courtois Jr.]] ('''1991'''). ''Where is Computer Chess Going?'' [[ICGA Journal#14_4|ICCA Journal, Vol. 14, No. 4]]</ref> . At one point the discussion went on [[Brute-Force|brute strength]] versus [[Pruning|trimming]] techniques - Campbell replied that both approaches will eventually succeed. [[Larry Kaufman]] commented from the audience that [[Selectivity|selective]] [[Search|searches]] outperform full width on comparable hardware. [[Don Dailey]] mentioned that one main goal is to beat the World Champion. He asked "How long will it take to cross the extra distance and play a perfect game?". Berliner replied, "Centuries! A perfect game is a science-fiction dream". Further, Robert Levinson gave a presentation of his [[Morph]] project.
=Tournament Director=
* [[Michael Valvo|Mike Valvo]]
* [[Danny Kopec]] (Assistant)
=Publications=
==Tournament==
* [[Don Beal]] ('''1991'''). ''Report on the 22nd ACM International Computer Chess Championship''. [[ICGA Journal#14_4|ICCA Journal, Vol. 14, No. 4]]
* [[Danny Kopec]], [[Monroe Newborn]], [[Michael Valvo]] ('''1992'''). ''The 22d Annual ACM International Chess Championship'', in [http://www.computerhistory.org/chess/full_record.php?iid=doc-431614f6cc6e9 The 23rd ACM International Computer Chess Championship] from [[The Computer History Museum]], [http://archive.computerhistory.org/projects/chess/related_materials/text/3-1%20and%203-2%20and%203-3%20and%204-3.1993_23rd_ACM_ICCC/1993%20ICCC.062303066.sm.pdf pdf]
==Technical Session==
* [[Garth Courtois Jr.]] ('''1991'''). ''Where is Computer Chess Going?'' [[ICGA Journal#14_4|ICCA Journal, Vol. 14, No. 4]]
=External Links=
* [http://www.csvn.nl/index.php/historie/computer-computer/104-acm-1991 ACM 1991] [[CSVN]] site
{{ACM Include}}
=References=
<references />
'''[[ACM North American Computer Chess Championship|Up one level]]'''
