ACM+1973

toc =Final Standing=
 * Home * Tournaments * ACM North American Computer Chess Championship * ACM 1973**
 * < Prev Next >**
 * [[image:360px-Hyatt-regency-atlanta-side.jpg width="288" height="384" link="http://commons.wikimedia.org/wiki/File:Hyatt-regency-atlanta-side.jpg"]] ||~  || The ACM's **Fourth North American Computer Chess Championship** (NACCC) was held from August 26 to 28, 1973 at the [|Hyatt Regency Hotel], [|Atlanta], [|Georgia], USA. ||
 * Hyatt Regency Atlanta ||~  ||^   ||
 * ~ # ||~ Program ||~  ||~ 1 ||~   ||~ 2 ||~   ||~ 3 ||~   ||~ 4 ||~ P ||~ SOS ||~ Playoff ||
 * ~ 1 || Chess 4.0 ||~  ||= 7w1 ||~   ||= 5b½ ||~   ||= 8w1 ||~   ||= 2b1 ||~ 3½ ||= 8½ ||>   ||
 * ~ 2 || CHAOS ||~  ||= 12w1 ||~   ||= 10b1 ||~   ||= 6b1 ||~   ||= 1w0 ||~ 3 ||= 7 ||> 3b1,4w0 ||
 * ~ 3 || Ostrich ||~  ||= 8b0 ||~   ||= 11b1 ||~   ||= 10w1 ||~   ||= 6w1 ||~ 3 ||= 5½ ||> 2w0,4w0 ||
 * ~ 4 || Tech 2 ||~  ||= 10b0 ||~   ||= 12b1 ||~   ||= 5w1 ||~   ||= 9w1 ||~ 3 ||= 5 ||> 3w1,2b1 ||
 * ~ 5 || Dartmouth CP ||~  ||= 9b1 ||~   ||= 1w½ ||~   ||= 4b0 ||~   ||= 8w½ ||~ 2 ||= 9½ ||>   ||
 * ~ 6 || Tech ||~  ||= 11w1 ||~   ||= 8b1 ||~   ||= 2w0 ||~   ||= 3b0 ||~ 2 ||= 8½ ||>   ||
 * ~ 7 || T. Belle ||~  ||= 1b0 ||~   ||= 9w½ ||~   ||= 12w½ ||~   ||= 10w1 ||~ 2 ||= 6½ ||>   ||
 * ~ 8 || Coko 4 ||~  ||= 3w1 ||~   ||= 6w0 ||~   ||= 1b0 ||~   ||= 5b½ ||~ 1½ ||= 10½ ||>   ||
 * ~ 9 || Ga Tech CP ||~  ||= 5w0 ||~   ||= 7b½ ||~   ||= 11w1 ||~   ||= 4b0 ||~ 1½ ||= 8 ||>   ||
 * ~ 10 || The Fox ||~  ||= 4w1 ||~   ||= 2w0 ||~   ||= 3b0 ||~   ||= 7b0 ||~ 1 ||= 11 ||>   ||
 * ~ 11 || USC CP ||~  ||= 6b0 ||~   ||= 3w0 ||~   ||= 9b0 ||~   ||= 12w1 ||~ 1 ||= 7 ||>   ||
 * ~ 12 || Ches ||~  ||= 2b0 ||~   ||= 4w0 ||~   ||= 7b½ ||~   ||= 11b0 ||~ ½ ||= 9 ||>   ||
 * SOS: [|Sum of Opponent Scores]

=Participants= Joe Winograd, Victor Berman || UNIVAC 1108 || Fortran || Peter Rowe || HP 3000 ||  || David Slate || CDC 6400 || COMPASS || Charles Kalme || IBM 370/155 ||  ||
 * ~ Program ||~ Team ||~ Hardware ||~ Language ||
 * CHAOS || Ira Ruben, Fred Swartz,
 * Ches || David Barton, Craig Barnes,
 * Chess 4.0 || Larry Atkin, Keith Gorlen,
 * Coko 4 || Dennis Cooper, Ed Kozdrowicki || UNIVAC 1108 || Fortran ||
 * Dartmouth CP || Warren Montgomery, Larry Harris || GE-635 || [|GCOS] Assembly ||
 * Ga Tech CP || Lawrence Futrell || [|Burroughs B-5500] ||  ||
 * Ostrich || George Arnold, Monroe Newborn || SuperNOVA || Assembly ||
 * T. Belle || Ken Thompson || PDP-11 || C ||
 * Tech || Jim Gillogly || PDP-10 || [|BLISS] ||
 * Tech 2 || Alan Baisley || PDP-10 || Assembly ||
 * The Fox || Charlie Wilkes, Charles F. Wilkes || IBM 370/145 || APL ||
 * USC CP || Albert Zobrist, Frederic Roy Carlson,

=The Tournament=
 * [[image:320px-Hyatt_regency_atlanta_atrium.JPG link="http://commons.wikimedia.org/wiki/File:Hyatt_regency_atlanta_atrium.JPG"]] ||~  || The defending champions had completely rewritten their program using Shannon's type A strategy and renamed it Chess 4.0. They did it again, but not with a 100% score - after winning three ACM tournaments and ten consecutive tournament games, it only managed to draw from Dartmouth CP in round 2 - being in trouble most of the game, Dartmouth CP repeated the position for the third time while one pawn ahead. In the third round Tech 2 defeated Dartmouth CP, Chess 4.0 defeated Coko 4 and CHAOS won its third straight game to take the lead in the tournament. The last round pitted Chess 4.0 against CHAOS - the winner would win the tournament. The game was a highly tactical one in which the large trees examined by Chess were too much for CHAOS to handle. On the last evening of the tournament, after the Chess 4.0 versus CHAOS game was completed, Charles Kalme played both programs in a simultaneous exhibition with a Queen [|handicap]. He won the game against CHAOS (and a $100 side bet) but lost from Chess 4.0 . ||
 * Hyatt Regency Atrium ||~  ||^   ||

=Selected Games= Round 4, CHAOS - Chess 4.0 code [Event "ACM 1973"] [Site "Atlanta USA"] [Date "1973.08.28"] [Round "4"] [White "CHAOS"] [Black "Chess 4.0"] [Result "0-1"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5 8.Bb3 Bb7 9.Nc3 Nbd7 10.Bd2 Bd6 11.Rfe1 cxd4 12.exd4 O-O 13.Bg5 Qb6 14.Bc2 Bxf3 15.Qxf3 Qxd4 16.Rad1 Qb4 17.g3 Qxb2 18.Re2 Qa3 19.Qc6 Bb4 20.Rxd7 Rac8 21.Rc7 Rxc7 22.Qxc7 Qxc3 23.Qb7 Qc4 24.Bd1 Rd8 25.Re5 Rxd1+ 26.Kg2 Qf1+ 27.Kf3 Qh1+ 28.Ke2 Re1+ 29.Kd3 Qf1+ 30.Kd4 Qc4# 0-1 code Game and short analyze on Lichess.org : []

=Tournament Director=
 * David Levy

=Publications= > Chapter IX. The Fourth United States Computer Chess Championship
 * Steve Coles (**1973**). //[|Fourth United States computer chess championship from ACM73 news release]//. ACM SIGART Bulletin, No. 41
 * Ben Mittman, Monty Newborn (**1973**). //[|Results of the fourth annual U.S. computer chess tournament]//. ACM SIGART Bulletin, No. 42
 * Richard Fikes (**1974**). //[|Fourth U.S. Computer Chess Championship]//. ACM SIGART Bulletin, No. 44, 45
 * Monroe Newborn (**1975**). //Computer Chess//. [|Academic Press], New York, N.Y. ISBN 0-125-17250-8.

=External Links= > media type="youtube" key="E46OrveaN_g" width="560" height="315" include page="ACM Include" =References= =What links here?= include component="backlinks" page="ACM 1973" limit="40"
 * [|ACM 1973] CSVN site
 * [|Proceedings of the ACM annual conference]
 * Shawn Lane, Jonas Hellborg, Jeff Sipe - Improvisation, [|Atlanta] Drums & Percussion, August 19, 1996, [|YouTube] Video
 * Up one level**