ACM 1975

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Radisson Hotel [1]

The ACM's Sixth North American Computer Chess Championship (NACCC), was held in the Radisson Hotel [2] , Minneapolis, Minnesota, USA, October 19-21, 1975. During this event, International Master David Levy, the tournament director, won a simultaneous exhibition against the 12 computers (10 wins and 2 draws). In 1975, the programs reached the level of class A players (1800-2000 rating) [3] [4] .

Final Standing

[5]

# Name CC 1 2 3 4 P SOS SoDOS
1 Chess 4.4 US 12b1 3w1 4b1 2w1 4
2 Treefrog CA 7w1 6b1 8w1 1b0 3
3 ETAOIN SHRDLU US 8w1 1b0 6w1 9b1 3
4 CHAOS US 9w1 11b1 1w0 5w1 3 8 4
5 Duchess US 11w0 10w1 7b1 4b0 2
6 Chute 1.2 CA 10b1 2w0 3b0 11w1 2
7 Tyro US 2b0 9w1 5w0 12b1 2 7
8 Ostrich CA 3b0 12w1 2b0 10w½ 1
9 Wita CA 4b0 7b0 11w1 3w0 1 ½
10 Iron Fish US 6w0 5b0 12w½ 8b½ 1 1
11 Black Knight US 5b1 4w0 9b0 6b0 1 ¼
12 Sortie US 1w0 8b0 10b½ 7w0 ½ ½

Participants

Name CC Authors Organization Hardware
Black Knight US Fred Prouse, Kenn Sogge,
Gary Maltzen, Lonny Lebahn
Sperry Univac UNIVAC 1100
CHAOS US Mike Alexander, Victor Berman, Ira Ruben,
Fred Swartz, William Toikka, Joe Winograd
University of Michigan UNIVAC 1108
Chess 4.4 US David Slate, Larry Atkin Northwestern University CDC Cyber 175
Chute 1.2 CA Michael Valenti, Zvonko Vranesic University of Toronto Amdahl
Duchess US Eric Jensen, Tom Truscott, Bruce Wright Duke University IBM 370
ETAOIN SHRDLU US Garth Courtois Jr. Michigan State University Nova 1200
Iron Fish US Gary Boos, James Mundstock University of Minnesota CDC Cyber 74
Ostrich CA Monty Newborn McGill University Nova 2
Sortie US Stephen F. Becker Bucknell University
Treefrog CA Ron Hansen, Russell Crook, Gary Calnek University of Waterloo Honeywell 6080
Tyro US Albert Zobrist, Frederic Roy Carlson University of Southern California PDP-10 KL10
Wita CA Tony Marsland University of Alberta Amdahl

Photos & Games

Round 1

ETAOIN SHRDLU - Ostrich [6]

[Event "ACM 1975"]
[Site "Minneapolis, MN"]
[Date "1975.10.19"]
[Round "1"]
[White "ETAOIN SHRDLU"]
[Black "Ostrich"]
[Result "1-0"]

1.e4 e5 2.Bc4 Nf6 3.Nf3 Nxe4 4.Nxe5 d5 5.Be2 f6 6.Bb5+ Ke7 7.Nf3 c6 8.Be2 Bg4
9.O-O Kf7 10.d4 Be7 11.Nbd2 Bxf3 12.Nxf3 Qd6 13.Nh4 g5 14.Nf5 Qe6 15.Bg4 Kf8
16.Nxe7 Qxe7 17.f4 h6 18.fxg5 hxg5 19.Re1 Rh4 20.g3 Rh6 21.Bd2 c5 22.dxc5 Qxc5+
23.Be3 Qb5 24.Rc1 Qxb2 25.Qxd5 Nxg3 26.Bc5+ Kg7 27.hxg3 Na6 28.Rb1 Qxc2 29.Qxb7+
Kg6 30.Qxa8 Qxc5+ 31.Kg2 Rh7 32.Qg8+ Rg7 33.Qe8+ Rf7 34.Bh5+ Kxh5 35.Qxf7+ Kg4
36.Qe6+ Kh5 37.g4+ Kh6 38.Qxf6+ Kh7 39.Rh1+ Kg8 40.Rh8# 1-0

Round 2

3-3a.NACCC-Minneapolis.Chess 4.4.Slate-David Atkin-Larry.1975.102645412.MONTY NEWBORN.src.lg.jpg

David Slate and Larry Atkin in Chess 4.4 vs. ETAOIN SHRDLU [7]

[Event "ACM 1975"]
[Site "Minneapolis, MN"]
[Date "1975.10.19"]
[Round "2"]
[White "Chess 4.4"]
[Black "ETAOIN SHRDLU"]
[Result "1-0"]

1.f4 d5 2.Nf3 Nc6 3.e3 Bf5 4.Bb5 Nf6 5.Ne5 Qd6 6.O-O a6 7.Bxc6+ bxc6 8.g4 Bd7 9.g5 Ne4
10.Nxd7 Qxd7 11.d3 Nd6 12.Nd2 g6 13.Qf3 Bg7 14.c4 Rb8 15.Nb3 O-O 16.cxd5 cxd5 17.Qxd5 c6
18.Qg2 Rb5 19.d4 Rd8 20.Nc5 Qc8 21.a4 Rb4 22.Qe2 a5 23.b3 Nf5 24.Bb2 Qc7 25.Na6 Qd6
26.Nxb4 Qxb4 27.Qd3 c5 28.Ba3 Qb6 29.Rac1 cxd4 30.e4 Nd6 31.Bc5 Qb8 32.f5 gxf5 33.exf5 h5
34.Rcd1 Be5 35.Qh3 Ne4 36.Bxe7 Rd7 37.f6 Rd5 38.Kh1 Nc3 39.Rd3 Qxb3 40.g6 Qb7 41.Qxh5 Rd8+
42.Rdf3 Qxf3+ 43.Rxf3 fxg6 44.Qxg6+ Kh8 45.Rh3# 1-0

Game and short analyze on Lichess.org : [1]

Round 4

3-1.OSTRICH vs ETAION SHRDLU.Newborn Courtois.ACM 6 NACCC.Minneapolis.1975.102645370.NEWBORN.lg.jpg

Photo labeled Newborn and Courtois shows Ostrich vs. Iron Fish after 5... Qa5 [8] [9]

[Event "ACM 1975"]
[Site "Minneapolis, MN"]
[Date "1975.10.21"]
[Round "4"]
[White "Ostrich"]
[Black "Iron Fish"]
[Result "1/2-1/2"]

1.e4 d5 2.exd5 Qxd5 3.Nc3 Qe5+ 4.Nge2 Nf6 5.d4 Qa5 6.Be3 Bf5 7.Ng3 Bg4 8.Be2 Bxe2
9.Qxe2 Nbd7 10.O-O Qb4 11.Qb5 Qxb5 12.Nxb5 O-O-O 13.Nxa7+ Kb8 14.Nb5 e5 15.dxe5 Nxe5
16.Bg5 Bb4 17.Bxf6 gxf6 18.c3 Rd5 19.Nxc7 Rd2 20.cxb4 Kxc7 21.b3 Kc6 22.Ne4 Re2
23.Rfe1 Rxe1+ 24.Rxe1 f5 25.Ng3 Nd3 26.Re7 f4 27.Nh5 f5 28.a3 Ra8 29.a4 b5 30.Rxh7
bxa4 31.Rh6+ Kc7 32.Rh7+ Kc6 33.Rh6+ Kc7 34.bxa4 Rxa4 35.Rh7+ Kd6 36.Rh6+ Ke5 37.Kf1
Ra1+ 38.Ke2 Nxb4 39.h4 Rc1 40.Rb6 Nd5 41.Rh6 Rc2+ 42.Kf3 Rc3+ 43.Ke2 Rc2+ 44.Kf1 Rc1+
45.Ke2 Rc2+ 1/2-1/2

Levy Simul

3-1 and 3-3.Atkin.ACM 6 NACCC.Minneapolis.1975.102645358.NEWBORN.lg.jpg

Larry Atkin during the David Levy simultaneous exhibition against the 12 computers [10]

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