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360px-Westin_Bonaventure_Hotel.jpg

The ACM's Twelfth North American Computer Chess Championship (NACCC) was held from November 8 to 11, 1981 at the Bonaventure Hotel, Los Angeles, California, USA [1] .

Mike Valvo acted as Tournament Director, replacing David Levy, who previously served in that capacity and was expected to enter his own program. Tournament guests were Shelby Lyman [2], chess commentator for WNET's television chess shows and emcee for the Fisher-Spassky World Championship Match in 1972 [3] , and Isaac Kashdan, Chess Editor for the Los Angeles Times. A computer chess panel discussion and short paper presentation was part of the technical program [4] .
Westin Bonaventure Hotel [5]

Final Standing

[6]
#
Program
CC
1
2
3
4
P
SOS
SoDOS
1
Belle
US
7w1
9b1
2w½
3b1

10

2
Nuchess
US
10b1
4w1
1b½
5w½
3
11
8
3
Cray Blitz
US
6b1
5w1
12b1
1w0
3
10

4
Bebe
US
11w1
2b0
14b1
7b1
3


5
Duchess
US
15w1
3b0
8w1
2b½

9

6
Philidor
GB
3w0
15b1
9w1
8b½

8
4
7
Ostrich
CA
1b0
16w1
11b1
4w0
2
8

8
Chess Challenger X
US
14b1
12w½
5b0
6w½
2

3
9
L'Excentrique
CA
16b1
1w0
6b0
12w1
2


10
MyChess
US
2w0
11b0
15w1
14w1
2

2
11
Cube 2.1
US
4b0
10w1
7w0
13b½



12
CHAOS
US
13w1
8b½
3w0
9b0



13
Schach 2.5
DE
12b0
14w0
16b1
11w½

4
¾
14
Chaturanga
US
8w0
13b1
4w0
10b0
1


15
Awit
CA
5b0
6w0
10b0
16w1
1
7
0
16
Prodigy
CA
9w0
7b0
13w0
15b0
0

0

Participants

[7]
Program
CC
Team
Hardware
Language
Awit
CA
Tony Marsland
AMDAHL 470V/7
Algol-W
Bebe
US
Tony Scherzer
Bit Slice Chess hardware
Assembly
Belle
US
Ken Thompson, Joe Condon
PDP-11/23, LSI-11
with custom boards
C
CHAOS
US
Fred Swartz, Mike Alexander, Jack O’Keefe,
Mark Hersey, Victor Berman
AMDAHL 470
Fortran
Chaturanga
US
John Poduska, Jr.
68000 based Apollo workstation
Pascal
Chess Challenger X
US
Dan Spracklen, Kathe Spracklen,
Ron Nelson
6502 based System
Assembly
Cray Blitz
US
Robert Hyatt, Albert Gower,
Dave Darling, Derek Robb
Cray-1
Fortran IV
Cube 2.1
US
Lloyd L. Lank, James A. Lank
Cray-1
Fortran
Duchess
US
Tom Truscott, Eric Jensen, Bruce Wright
IBM 370
Assembly
L'Excentrique
CA
Claude Jarry
AMDAHL 470V/7
Assembly
MyChess
US
David Kittinger
Z80 Cromemco T-2D
Assembly
Nuchess
US
David Slate, William Blanchard
CDC Cyber 176
Fortran
Ostrich
CA
Monroe Newborn
5-Nova Multiprocessing System
Assembly
Philidor
GB
David Broughton, Mark Taylor,
David Levy, Mike Johnson, Kevin O’Connell
Z80 Osborne 1
Assembly
Prodigy
CA
Jonathan Schaeffer, J. Howard Johnson
Honeywell 6600
C
Schach 2.5
DE
Matthias Engelbach
Burroughs 7800
Algol

Photos

ACM1981MontyCongratsKen.jpg
The winner: Ken Thompson, programmer of Belle, acceps first-place trophy
from tournament organizer Monroe Newborn [8]

Selected Games

In Round 4, Cray Blitz (3) versus Belle (2½), Cray Blitz played the losing 28.Qxb6, and missed to win the tournament [9] [10] .
[Event "ACM 1981"]
[Site "Los Angeles USA"]
[Date "1981.11.11"]
[Round "4"]
[White "Cray Blitz"]
[Black "Belle"]
[Result "0-1"]
 
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Qf3 Rb8
9.Bxc6+ Nxc6 10.Qxc6+ Nd7 11.d3 Be7 12.Ne4 Bb7 13.Qa4 Qc7 14.Nbc3 Bc6 15.Qc4 Qc8
16.Nd5 Bxd5 17.Qxd5 Qxc2 18.O-O f6 19.f4 Nb6 20.Qa5 Qxd3 21.Qxa7 O-O 22.Qxe7 Qxe4
23.Qe6+ Kh8 24.fxe5 fxe5 25.Rxf8+ Rxf8 26.h3 Qe1+ 27.Kh2 h6 28.Qxb6 Rf1 29.Qd8+
Kh7 30.Qd3+ e4 31.Qxf1 Qxf1 32.a3 e3 33.Bxe3 Qxa1 34.Bd4 h5 35.Bc3 g5 36.Be5 Qe1
37.Bc3 Qf2 38.Kh1 g4 39.hxg4 hxg4 40.Kh2 Qh4+ 41.Kg1 g3 42.Kf1 Kg6 0-1
Game and short analyze on Lichess.org : https://en.lichess.org/06p1zUz1

See also


Tournament Director


Publications


Forum Posts


External Links


References

  1. ^ Ben Mittman (1981). Tournament Announcement - ACM Tournament in Los Angeles. ICCA Newletter, Vol. 4, No. 1
  2. ^ Chess by Shelby Lyman, May 7, 2016 » Susan Polgar Global Chess Daily News and Information - The Chess Tech Evolution
  3. ^ The man behind the Fischer-Spassky show, ChessBase News, January 03, 2003
  4. ^ AdvanceProgram ACM 1981, November 9-11, 1981 Bonaventure Hotel, Los Angeles, California (pdf)
  5. ^ Westin Bonaventure Hotel designed by John Portman - as seen from the platform of 444 S. Flower Building, Downtown Los Angeles, Photo by Geographer, December 31, 2006, Wikimedia Commons, Westin Bonaventure Hotel from Wikipedia
  6. ^ ACM 1981 CSVN site
  7. ^ Ben Mittman (1981). Twelfth ACM North American Computer Chess Championship. ICCA Newletter, Vol. 4, No. 3
  8. ^ Image clipped from Craig Stinson (1982). Chess Championship: Machines Play, People Watch. Softline, Vol. 1, pp. 6
  9. ^ Re: Cray Blitz vs Belle [1981 North American Computer Chess Championship] by Robert Hyatt, CCC, August 29, 2001
  10. ^ How Far We've Come: 20 Years of Personal Computing by Blake Linton Wilfon, November 05, 2000

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