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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	9½	9½
2	Treefrog	CA	7w1	6b1	8w1	1b0	3	9½	5½
3	ETAOIN SHRDLU	US	8w1	1b0	6w1	9b1	3	8½	4½
4	CHAOS	US	9w1	11b1	1w0	5w1	3	8	4
5	Duchess	US	11w0	10w1	7b1	4b0	2	8½	4¼
6	Chute 1.2	CA	10b1	2w0	3b0	11w1	2	7½	1½
7	Tyro	US	2b0	9w1	5w0	12b1	2	7	1½
8	Ostrich	CA	3b0	12w1	2b0	10w½	1½	7½	1
9	Wita	CA	4b0	7b0	11w1	3w0	1	8½	½
10	Iron Fish	US	6w0	5b0	12w½	8b½	1	6½	1
11	Black Knight	US	5b1	4w0	9b0	6b0	1	6½	¼
12	Sortie	US	1w0	8b0	10b½	7w0	½	8½	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

CC Country Codes

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]

Reports

David Levy (1976). 1975 U.S. Computer chess championship. Computer Science Press
Monty Newborn (1977). David vs. 12 Goliaths. The Best of Creative Computing Volume 2, edited by David Ahl, hosted by AtariArchives.org
Monty Newborn (1977). Summary of the ACM Sixth U.S. Computer Chess Championship. The Best of Creative Computing Volume 2, edited by David Ahl, hosted by AtariArchives.org
Ben Mittman (1977). A Brief History of Computer Chess Tournaments: 1970-1975. in Peter W. Frey (ed.) Chess Skill in Man and Machine

Forum Posts

KRBKB and ACM USCCC #6 by Steven J. Edwards, rgcc, September 29, 1996 » Treefrog, David Levy

External Links

ACM 1975 CSVN site
Proceedings of the 1975 ACM Annual Conference
North American Computer-Chess Championships, complete History of Tournament Results by Theo van der Storm
ACM COMPUTER CHESS by Bill Wall

References

↑ Radisson Hotel in the 60s, Photo from Radisson Plaza in Minneapolis relaunches as Radisson Blu in July by David Phelps, Star Tribune, June 2, 2014
↑ The first Radisson Hotel was built in Central Minneapolis in 1909, and was named after the 17th century French explorer Pierre-Esprit Radisson. The hotel was purchased by Curt Carlson (1914–1999) in 1962, and is still owned by his Carlson Companies, after renovation in 2014, the Radisson Blu Category:Radisson Hotels & Resorts - Wikimedia Commons A History of The Radisson Hotel - Downtown Minneapolis / Jan 1998 Hotels Downtown Minneapolis | Radisson Blu Minneapolis
↑ ACM COMPUTER CHESS by Bill Wall
↑ Monty Newborn (1977). David vs. 12 Goliaths, from The Best of Creative Computing Volume 2, Edited by David Ahl, hosted by AtariArchives.org
↑ ACM 1975 CSVN site
↑ David Levy (ed.) (1988). Computer Chess Compendium. Chapter 9.1 Games from the ACM Tournaments
↑ Slate and Atkin at the 6th ACM North American Computer Chess Tournament, 1975, Gift of Monroe Newborn from The Computer History Museum
↑ Newborn and Courtois at the 6th ACM North American Computer Chess Championship Gift of Monroe Newborn from The Computer History Museum
↑ David Levy (ed.) (1988). Computer Chess Compendium. Chapter 9.1 Games from the ACM Tournaments
↑ Atkin at 6th ACM North American Computer Chess Championship in Minneapolis, 1975, Photo by Monroe Newborn from The Computer History Museum

Up one level

[1] Radisson Hotel in the 60s, Photo from Radisson Plaza in Minneapolis relaunches as Radisson Blu in July by David Phelps, Star Tribune, June 2, 2014

[2] The first Radisson Hotel was built in Central Minneapolis in 1909, and was named after the 17th century French explorer Pierre-Esprit Radisson. The hotel was purchased by Curt Carlson (1914–1999) in 1962, and is still owned by his Carlson Companies, after renovation in 2014, the Radisson Blu Category:Radisson Hotels & Resorts - Wikimedia Commons A History of The Radisson Hotel - Downtown Minneapolis / Jan 1998 Hotels Downtown Minneapolis | Radisson Blu Minneapolis

[3] ACM COMPUTER CHESS by Bill Wall

[4] Monty Newborn (1977). David vs. 12 Goliaths, from The Best of Creative Computing Volume 2, Edited by David Ahl, hosted by AtariArchives.org

[5] ACM 1975 CSVN site

[6] David Levy (ed.) (1988). Computer Chess Compendium. Chapter 9.1 Games from the ACM Tournaments

[7] Slate and Atkin at the 6th ACM North American Computer Chess Tournament, 1975, Gift of Monroe Newborn from The Computer History Museum

[8] Newborn and Courtois at the 6th ACM North American Computer Chess Championship Gift of Monroe Newborn from The Computer History Museum

[9] David Levy (ed.) (1988). Computer Chess Compendium. Chapter 9.1 Games from the ACM Tournaments

[10] Atkin at 6th ACM North American Computer Chess Championship in Minneapolis, 1975, Photo by Monroe Newborn from The Computer History Museum

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ACM 1975

Contents

Final Standing

Participants

Photos & Games

Round 1

Round 2

Round 4

Levy Simul

Reports

Forum Posts

External Links

References

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