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		The ACM's Eighth North American Computer Chess Championship (NACCC) was held on October 15 to 17, 1977 at the Olympic Hotel in Seattle, Washington, United States. In the evening after Round 3, Tournament Director David Levy held a simultaneous exhibition against all twelve programs, winning 10, drawing one, and losing to Chess 4.6. The next day, after the tournament was over, he played two games of speed chess against Chess 4.6 and Duchess and lost both [1] .
Olympic Hotel [2]

Final Standing

^[3]

#	Name	CC	1	2	3	4	P	SOS	SoDOS
1	Chess 4.6	US	8w1	4b1	3w1	2b½	3½	10½	8¾
2	Duchess	US	5b1	6w1	7b1	1w½	3½	9½	7¾
3	CHAOS	US	10w1	9b1	1b0	5w1	3	7½	4
4	Xenarbor	US	11w1	1w0	6b1	8b½	2½	8	3¾
5	Blitz 5	US	2w0	8b1	9w1	3b0	2	9	2½
6	Black Knight	US	12w1	2b0	4w0	11b1	2	8	2
7	Ostrich	CA	9b0	12w1	2w0	10b1	2	6½	2
8	Chute 1.2	CA	1b0	5w0	10b1	4w½	1½	9	2¼
9	8080 Chess	US	7w1	3w0	5b0	12b0	1	8	2
10	Tyro	US	3b0	11b1	8w0	7w0	1	7½	1
11	Wita	CA	4b0	10w0	12b1	6w0	1	6½	1
12	Brute Force	CA	6b0	7b0	11w0	9w1	1	6	1

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

Participants

^[4]

Program	CC	Authors	Hardware
8080 Chess	US	Robert Arnstein	8080 Processor Technology
Black Knight	US	Fred Prouse, Kenn Sogge, Gary Maltzen, Lonny Lebahn	UNIVAC 1110
Blitz 5	US	Robert Hyatt	XDS Sigma 9
Brute Force	CA	Louis Kessler	IBM 370/168
CHAOS	US	Mike Alexander, Victor Berman, Ira Ruben, Fred Swartz, William Toikka, Joe Winograd	Amdahl 470v/6
Chess 4.6	US	David Slate, Larry Atkin	CDC Cyber 176
Chute 1.2	CA	Michael Valenti, Zvonko Vranesic|	Amdahl 470v/6
Duchess	US	Eric Jensen, Tom Truscott, Bruce Wright	IBM 370/165
Ostrich	CA	Monty Newborn	Nova 3
Tyro	US	Albert Zobrist, Frederic Roy Carlson	PDP-10 KL
Wita	CA	Tony Marsland	Amdahl 470v/6
Xenarbor	US	Donald Miller	IBM 370/158

• CC Country Codes

Selected Games

Round 1

Round 1, Xenarbor - Wita

[Event "ACM 1977"]
[Site "Seattle USA"]
[Date "1977.10.15"]
[Round "1"]
[White "Xenarbor"]
[Black "Wita"]
[Result "1-0"]
 
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 e6 5.Nf3 d6 6.g3 Nc6 7.Bg2 h6 8.O-O O-O
9.d5 exd5 10.cxd5 Nb8 11.Be3 Re8 12.Qc2 Qe7 13.Rfd1 Nxe4 14.Nxe4 Qxe4 15.Qxc7
Bxb2 16.Rab1 Na6 17.Qxd6 Bg7 18.Nd4 Be5 19.Bxe4 Bxd6 20.Bg2 Bf8 21.Rdc1 Bc5
22.a4 f6 23.a5 Rb8 24.Rxc5 Nxc5 25.Nc6 Bf5 26.Rb5 a6 27.Rb6 bxc6 28.dxc6 Rxb6
29.axb6 Re5 30.c7 h5 31.h4 a5 32.Bf1 a4 33.Bd4 a3 34.Bxe5 fxe5 35.Bc4+ Kf8
36.Kh2 Ke7 37.f3 Bc8 38.f4 exf4 39.gxf4 Nd7 40.Bb3 Bb7 41.Ba2 Kf6 42.Bb3 Kg7
43.f5 gxf5 44.Bd5 Bc8 45.b7 a2 46.bxc8=Q Nf6 47.Bxa2 f4 48.Qf5 f3 49.Qg5+
1-0

Round 4

Round 4, Duchess - Chess 4.6

[Event "ACM 1977"]
[Site "Seattle USA"]
[Date "1977.10.17"]
[Round "4"]
[White "Duchess"]
[Black "Chess 4.6"]
[Result "1/2-1/2"]
[ECO "B21"]
 
1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 d6 6.Bc4 e6 7.O-O Nf6 8.Qe2 Be7
9.Rd1 e5 10.Be3 Ng4 11.Bd2 Nd4 12.Nxd4 exd4 13.Nb5 Qb6 14.Bf4 Ne5 15.Nxd4 Nxc4
16.Qxc4 Bg4 17.Qa4+ Bd7 18.Qb3 O-O 19.Qxb6 axb6 20.a3 Rfc8 21.Rac1 Rxc1 22.Rxc1
Ra4 23.Be3 Bd8 24.f3 Ra5 25.Rd1 Bf6 26.Rd2 Rc5 27.Ne2 Rc6 28.a4 Be6 29.Nd4 Rc1+
30.Kf2 Bd7 31.Nb5 Bxb5 32.axb5 Rb1 33.Bxb6 Rxb2 34.Rxb2 Bxb2 35.Ke3 Kf8 36.Bd4
Bxd4+ 37.Kxd4 Ke8 38.Kd5 Kd7 39.b6 g6 40.f4 Ke7 41.h3 f6 42.h4 Kd7 43.g4 h6
44.h5 gxh5 45.gxh5 Ke7 46.Kd4 Ke6 47.Kc4 Ke7 48.f5 Kd8 49.Kb4 Kd7 50.Kb5 Ke8
51.Ka4 Ke7 52.Kb4 Kd8 53.Kc4 Ke8 54.Kd4 Kd7 55.Kd5 Ke7 56.Kd4 Ke8 57.Kc4 Kf7
58.Kd3 1/2-1/2

Game and short analyze on Lichess.org : https://fr.lichess.org/Qy8zH410

Tournament Director

• David Levy

Reports

• Editor (1978). Notes from Seattle's Computer Chess Tournament. Personal Computing, Vol. 2, No. 4, pp. 106
• Editor (1978). Seattle's Third Round. Personal Computing, Vol. 2, No. 6, pp. 93

External Links

• ACM 1977 CSVN site
• A Memorial to BRUTE FORCE by Louis Kessler

• North American Computer-Chess Championships, complete History of Tournament Results by Theo van der Storm
• Important games hosted by Ed Schröder
• ACM COMPUTER CHESS by Bill Wall

References

1. ^ A Memorial to BRUTE FORCE by Louis Kessler
2. ^ Olympic Hotel, Seattle, Washington, Photo by Joe Mabel, June 01, 2009, Category:Olympic Hotel, Seattle - Wikimedia Commons
3. ^ ACM 1977 CSVN site
4. ^ A Memorial to BRUTE FORCE by Louis Kessler, additional authors from WCCC 1977

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