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'''[[Main Page|Home]] * [[Tournaments and Matches|Tournaments]] * [[ACM North American Computer Chess Championship]] * ACM 1975'''
'''[[ACM 1974|< Prev]] [[ACM 1976|Next >]]'''
[[FILE:RadissoninMinneapolis60s.jpg|border|right|thumb|link=http://www.startribune.com/local/minneapolis/261540121.html| Radisson Hotel <ref>Radisson Hotel in the 60s, Photo from [http://www.startribune.com/local/minneapolis/261540121.html Radisson Plaza in Minneapolis relaunches as Radisson Blu in July] by [http://www.startribune.com/bios/10645671.html David Phelps], [https://en.wikipedia.org/wiki/Star_Tribune Star Tribune], June 2, 2014</ref> ]]
The '''ACM's Sixth North American Computer Chess Championship''' (NACCC), was held in the Radisson Hotel <ref>The first [https://en.wikipedia.org/wiki/Radisson_Hotels Radisson Hotel] was built in [https://en.wikipedia.org/wiki/Central,_Minneapolis Central Minneapolis] in 1909, and was named after the 17th century French explorer [https://en.wikipedia.org/wiki/Pierre-Esprit_Radisson Pierre-Esprit Radisson]. The hotel was purchased by [https://en.wikipedia.org/wiki/Carlson_Companies Curt Carlson] (1914–1999) in 1962, and is still owned by his [https://en.wikipedia.org/wiki/Carlson_Companies Carlson Companies], after renovation in 2014, the [https://en.wikipedia.org/wiki/Radisson_Blu Radisson Blu]
[http://commons.wikimedia.org/wiki/Category:Radisson_Hotels_%26_Resorts Category:Radisson Hotels & Resorts] - [https://en.wikipedia.org/wiki/Wikimedia_Commons Wikimedia Commons]
[http://www.hotel-online.com/News/SpecialReleases1998/HistoryRadissonHotel_Jan1998.html A History of The Radisson Hotel - Downtown Minneapolis / Jan 1998]
[http://www.radissonblu.com/hotel-minneapolis Hotels Downtown Minneapolis | Radisson Blu Minneapolis]</ref> , [https://en.wikipedia.org/wiki/Minneapolis%2C_Minnesota Minneapolis], [https://en.wikipedia.org/wiki/Minnesota Minnesota], USA, October 19-21, [[Timeline#1975|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) <ref>[http://ed-thelen.org/comp-hist/ACM-ComputerChessWall.html ACM COMPUTER CHESS] by [http://www.chessgames.com/perl/chessplayer?pid=32393 Bill Wall]</ref> <ref>[[Monroe Newborn|Monty Newborn]] ('''1977'''). ''[http://www.atariarchives.org/bcc2/showpage.php?page=21 David vs. 12 Goliaths]'', from [[Creative Computing#Best2|The Best of Creative Computing Volume 2]], Edited by [https://en.wikipedia.org/wiki/David_H._Ahl David Ahl], hosted by [http://www.atariarchives.org/ AtariArchives.org]</ref> .
=Final Standing=
<ref>[http://www.csvn.nl/index.php/historie/computer-computer/88-acm-1975 ACM 1975] [[CSVN]] site</ref>
{| class="wikitable"
|-
! #
! Name
! CC
! 1
! 2
! 3
! 4
! P
! SOS
! SoDOS
|-
! 1
| [[Chess (Program)|Chess 4.4]]
! US
| style="text-align:right;" | 12b1
| style="text-align:right;" | 3w1
| style="text-align:right;" | 4b1
| style="text-align:right;" | 2w1
! 4
| style="text-align:center;" | 9½
| style="text-align:center;" | 9½
|-
! 2
| [[Treefrog]]
! CA
| style="text-align:right;" | 7w1
| style="text-align:right;" | 6b1
| style="text-align:right;" | 8w1
| style="text-align:right;" | 1b0
! 3
| style="text-align:center;" | 9½
| style="text-align:center;" | 5½
|-
! 3
| [[Etaoin Shrdlu]]
! US
| style="text-align:right;" | 8w1
| style="text-align:right;" | 1b0
| style="text-align:right;" | 6w1
| style="text-align:right;" | 9b1
! 3
| style="text-align:center;" | 8½
| style="text-align:center;" | 4½
|-
! 4
| [[CHAOS]]
! US
| style="text-align:right;" | 9w1
| style="text-align:right;" | 11b1
| style="text-align:right;" | 1w0
| style="text-align:right;" | 5w1
! 3
| style="text-align:center;" | 8
| style="text-align:center;" | 4
|-
! 5
| [[Duchess]]
! US
| style="text-align:right;" | 11w0
| style="text-align:right;" | 10w1
| style="text-align:right;" | 7b1
| style="text-align:right;" | 4b0
! 2
| style="text-align:center;" | 8½
| style="text-align:center;" | 4¼
|-
! 6
| [[Chute|Chute 1.2]]
! CA
| style="text-align:right;" | 10b1
| style="text-align:right;" | 2w0
| style="text-align:right;" | 3b0
| style="text-align:right;" | 11w1
! 2
| style="text-align:center;" | 7½
| style="text-align:center;" | 1½
|-
! 7
| [[Tyro]]
! US
| style="text-align:right;" | 2b0
| style="text-align:right;" | 9w1
| style="text-align:right;" | 5w0
| style="text-align:right;" | 12b1
! 2
| style="text-align:center;" | 7
| style="text-align:center;" | 1½
|-
! 8
| [[Ostrich]]
! CA
| style="text-align:right;" | 3b0
| style="text-align:right;" | 12w1
| style="text-align:right;" | 2b0
| style="text-align:right;" | 10w½
! 1½
| style="text-align:center;" | 7½
| style="text-align:center;" | 1
|-
! 9
| [[Awit|Wita]]
! CA
| style="text-align:right;" | 4b0
| style="text-align:right;" | 7b0
| style="text-align:right;" | 11w1
| style="text-align:right;" | 3w0
! 1
| style="text-align:center;" | 8½
| style="text-align:center;" | ½
|-
! 10
| [[Iron Fish]]
! US
| style="text-align:right;" | 6w0
| style="text-align:right;" | 5b0
| style="text-align:right;" | 12w½
| style="text-align:right;" | 8b½
! 1
| style="text-align:center;" | 6½
| style="text-align:center;" | 1
|-
! 11
| [[Black Knight]]
! US
| style="text-align:right;" | 5b1
| style="text-align:right;" | 4w0
| style="text-align:right;" | 9b0
| style="text-align:right;" | 6b0
! 1
| style="text-align:center;" | 6½
| style="text-align:center;" | ¼
|-
! 12
| [[Sortie]]
! US
| style="text-align:right;" | 1w0
| style="text-align:right;" | 8b0
| style="text-align:right;" | 10b½
| style="text-align:right;" | 7w0
! ½
| style="text-align:center;" | 8½
| style="text-align:center;" | ½
|}
* [https://en.wikipedia.org/wiki/ISO_3166-1 CC Country Codes]
* SOS: [https://en.wikipedia.org/wiki/Buchholz_system Sum of Opponent Scores]
* SoDOS: [https://en.wikipedia.org/wiki/Neustadtl_score Sum of Defeated Opponent Scores]
=Participants=
{| class="wikitable"
|-
! Name
! CC
! Authors
! Organization
! Hardware
|-
| [[Black Knight]]
! US
| [[Fred Prouse]], [[Kenn Sogge]],<br>[[Gary Maltzen]], [[Lonny Lebahn]]
| [https://en.wikipedia.org/wiki/UNIVAC Sperry Univac]
| [[UNIVAC 1100]]
|-
| [[CHAOS]]
! US
| [[Mike Alexander]], [[Victor Berman]], [[Ira Ruben]],<br/>[[Fred Swartz]], [[William Toikka]], [[Joe Winograd]]
| [[University of Michigan]]
| [[UNIVAC 1100|UNIVAC 1108]]
|-
| [[Chess (Program)|Chess 4.4]]
! US
| [[David Slate]], [[Larry Atkin]]
| [[Northwestern University]]
| [[CDC Cyber|CDC Cyber 175]]
|-
| [[Chute|Chute 1.2]]
! CA
| [[Michael Valenti]], [[Zvonko Vranesic]]
| [[University of Toronto]]
| [[AMDAHL 470|Amdahl]]
|-
| [[Duchess]]
! US
| [[Eric Jensen]], [[Tom Truscott]], [[Bruce Wright]]
| [[Duke University]]
| [[IBM 370]]
|-
| [[Etaoin Shrdlu]]
! US
| [[Garth Courtois Jr.]]
| [[Michigan State University]]
| [[Nova#1200|Nova 1200]]
|-
| [[Iron Fish]]
! US
| [[Gary Boos]], [[James Mundstock]]
| [https://en.wikipedia.org/wiki/University_of_Minnesota University of Minnesota]
| [[CDC Cyber|CDC Cyber 74]]
|-
| [[Ostrich]]
! CA
| [[Monroe Newborn|Monty Newborn]]
| [[McGill University]]
| [[Nova#2|Nova 2]]
|-
| [[Sortie]]
! US
| [[Stephen F. Becker]]
| [https://en.wikipedia.org/wiki/Bucknell_University Bucknell University]
|
|-
| [[Treefrog]]
! CA
| [[Ron Hansen]], [[Russell Crook]], [[Gary Calnek]]
| [[University of Waterloo]]
| [[Honeywell 6000|Honeywell 6080]]
|-
| [[Tyro]]
! US
| [[Albert Zobrist]], [[Frederic Roy Carlson]]
| [[University of Southern California]]
| [[PDP-10|PDP-10 KL10]]
|-
| [[Awit|Wita]]
! CA
| [[Tony Marsland]]
| [[University of Alberta]]
| [[AMDAHL 470|Amdahl]]
|}
* [https://en.wikipedia.org/wiki/ISO_3166-1 CC Country Codes]
=Photos & Games=
==Round 1==
[[Etaoin Shrdlu]] - [[Ostrich]] <ref>[[David Levy]] (ed.) ('''1988'''). ''[[Computer Chess Compendium]]''. Chapter 9.1 Games from the ACM Tournaments</ref>
<pre>
[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
</pre>
==Round 2==
[[FILE:3-3a.NACCC-Minneapolis.Chess_4.4.Slate-David_Atkin-Larry.1975.102645412.MONTY_NEWBORN.src.lg.jpg|none|border|text-bottom|link=http://www.computerhistory.org/chess/full_record.php?iid=stl-431f4cc15f2c0]]
[[David Slate]] and [[Larry Atkin]] in [[Chess (Program)|Chess 4.4]] vs. [[Etaoin Shrdlu]] <ref>[http://www.computerhistory.org/chess/full_record.php?iid=stl-431f4cc15f2c0 Slate and Atkin at the 6th ACM North American Computer Chess Tournament], 1975, Gift of [[Monroe Newborn]] from [[The Computer History Museum]]</ref>
<pre>
[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
</pre>
Game and short analyze on Lichess.org : [https://en.lichess.org/ed8PdieS]
==Round 4==
[[FILE:3-1.OSTRICH_vs_ETAION_SHRDLU.Newborn_Courtois.ACM_6_NACCC.Minneapolis.1975.102645370.NEWBORN.lg.jpg|none|border|text-bottom|link=http://www.computerhistory.org/chess/full_record.php?iid=stl-430b9bbe09ba4]]
Photo labeled [[Monroe Newborn|Newborn]] and [[Garth Courtois Jr.|Courtois]] shows [[Ostrich]] vs. [[Iron Fish]] after 5... Qa5 <ref>[http://www.computerhistory.org/chess/full_record.php?iid=stl-430b9bbe09ba4 Newborn and Courtois at the 6th ACM North American Computer Chess Championship] Gift of [[Monroe Newborn]] from [[The Computer History Museum]]</ref> <ref>[[David Levy]] (ed.) ('''1988'''). ''[[Computer Chess Compendium]]''. Chapter 9.1 Games from the ACM Tournaments</ref>
<pre>
[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
</pre>
==Levy Simul==
[[FILE:3-1_and_3-3.Atkin.ACM_6_NACCC.Minneapolis.1975.102645358.NEWBORN.lg.jpg|none|border|text-bottom|link=http://www.computerhistory.org/chess/full_record.php?iid=stl-430b9bbdbe635]]
[[Larry Atkin]] during the [[David Levy]] simultaneous exhibition against the 12 computers <ref>[http://www.computerhistory.org/chess/full_record.php?iid=stl-430b9bbdbe635 Atkin at 6th ACM North American Computer Chess Championship in Minneapolis], 1975, Photo by [[Monroe Newborn]] from [[The Computer History Museum]]</ref>
=Reports=
* [[David Levy]] ('''1976'''). ''1975 U.S. Computer chess championship''. Computer Science Press
* [[Monroe Newborn|Monty Newborn]] ('''1977'''). ''[http://www.atariarchives.org/bcc2/showpage.php?page=21 David vs. 12 Goliaths]''. [[Creative Computing#Best2|The Best of Creative Computing Volume 2]], edited by [https://en.wikipedia.org/wiki/David_H._Ahl David Ahl], hosted by [http://www.atariarchives.org/ AtariArchives.org]
* [[Monroe Newborn|Monty Newborn]] ('''1977'''). ''[http://www.atariarchives.org/bcc2/showpage.php?page=22 Summary of the ACM Sixth U.S. Computer Chess Championship]''. [[Creative Computing#Best2|The Best of Creative Computing Volume 2]], edited by [https://en.wikipedia.org/wiki/David_H._Ahl David Ahl], hosted by [http://www.atariarchives.org/ 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=
* [http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/a72e548b90803b83 KRBKB and ACM USCCC #6] by [[Steven Edwards|Steven J. Edwards]], [[Computer Chess Forums|rgcc]], September 29, 1996 » [[Treefrog]], [[David Levy]]
=External Links=
* [http://www.csvn.nl/index.php/historie/computer-computer/88-acm-1975 ACM 1975] [[CSVN]] site
* [http://portal.acm.org/toc.cfm?id=800181&coll=GUIDE&dl=GUIDE&type=proceeding&idx=SERIES324&part=series&WantType=Proceedings&title=ACM%2FCSC-ER&CFID=87593177&CFTOKEN=36310741 Proceedings of the 1975 ACM Annual Conference]
{{ACM Include}}
=References=
<references />
'''[[ACM North American Computer Chess Championship|Up one level]]'''
'''[[ACM 1974|< Prev]] [[ACM 1976|Next >]]'''
[[FILE:RadissoninMinneapolis60s.jpg|border|right|thumb|link=http://www.startribune.com/local/minneapolis/261540121.html| Radisson Hotel <ref>Radisson Hotel in the 60s, Photo from [http://www.startribune.com/local/minneapolis/261540121.html Radisson Plaza in Minneapolis relaunches as Radisson Blu in July] by [http://www.startribune.com/bios/10645671.html David Phelps], [https://en.wikipedia.org/wiki/Star_Tribune Star Tribune], June 2, 2014</ref> ]]
The '''ACM's Sixth North American Computer Chess Championship''' (NACCC), was held in the Radisson Hotel <ref>The first [https://en.wikipedia.org/wiki/Radisson_Hotels Radisson Hotel] was built in [https://en.wikipedia.org/wiki/Central,_Minneapolis Central Minneapolis] in 1909, and was named after the 17th century French explorer [https://en.wikipedia.org/wiki/Pierre-Esprit_Radisson Pierre-Esprit Radisson]. The hotel was purchased by [https://en.wikipedia.org/wiki/Carlson_Companies Curt Carlson] (1914–1999) in 1962, and is still owned by his [https://en.wikipedia.org/wiki/Carlson_Companies Carlson Companies], after renovation in 2014, the [https://en.wikipedia.org/wiki/Radisson_Blu Radisson Blu]
[http://commons.wikimedia.org/wiki/Category:Radisson_Hotels_%26_Resorts Category:Radisson Hotels & Resorts] - [https://en.wikipedia.org/wiki/Wikimedia_Commons Wikimedia Commons]
[http://www.hotel-online.com/News/SpecialReleases1998/HistoryRadissonHotel_Jan1998.html A History of The Radisson Hotel - Downtown Minneapolis / Jan 1998]
[http://www.radissonblu.com/hotel-minneapolis Hotels Downtown Minneapolis | Radisson Blu Minneapolis]</ref> , [https://en.wikipedia.org/wiki/Minneapolis%2C_Minnesota Minneapolis], [https://en.wikipedia.org/wiki/Minnesota Minnesota], USA, October 19-21, [[Timeline#1975|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) <ref>[http://ed-thelen.org/comp-hist/ACM-ComputerChessWall.html ACM COMPUTER CHESS] by [http://www.chessgames.com/perl/chessplayer?pid=32393 Bill Wall]</ref> <ref>[[Monroe Newborn|Monty Newborn]] ('''1977'''). ''[http://www.atariarchives.org/bcc2/showpage.php?page=21 David vs. 12 Goliaths]'', from [[Creative Computing#Best2|The Best of Creative Computing Volume 2]], Edited by [https://en.wikipedia.org/wiki/David_H._Ahl David Ahl], hosted by [http://www.atariarchives.org/ AtariArchives.org]</ref> .
=Final Standing=
<ref>[http://www.csvn.nl/index.php/historie/computer-computer/88-acm-1975 ACM 1975] [[CSVN]] site</ref>
{| class="wikitable"
|-
! #
! Name
! CC
! 1
! 2
! 3
! 4
! P
! SOS
! SoDOS
|-
! 1
| [[Chess (Program)|Chess 4.4]]
! US
| style="text-align:right;" | 12b1
| style="text-align:right;" | 3w1
| style="text-align:right;" | 4b1
| style="text-align:right;" | 2w1
! 4
| style="text-align:center;" | 9½
| style="text-align:center;" | 9½
|-
! 2
| [[Treefrog]]
! CA
| style="text-align:right;" | 7w1
| style="text-align:right;" | 6b1
| style="text-align:right;" | 8w1
| style="text-align:right;" | 1b0
! 3
| style="text-align:center;" | 9½
| style="text-align:center;" | 5½
|-
! 3
| [[Etaoin Shrdlu]]
! US
| style="text-align:right;" | 8w1
| style="text-align:right;" | 1b0
| style="text-align:right;" | 6w1
| style="text-align:right;" | 9b1
! 3
| style="text-align:center;" | 8½
| style="text-align:center;" | 4½
|-
! 4
| [[CHAOS]]
! US
| style="text-align:right;" | 9w1
| style="text-align:right;" | 11b1
| style="text-align:right;" | 1w0
| style="text-align:right;" | 5w1
! 3
| style="text-align:center;" | 8
| style="text-align:center;" | 4
|-
! 5
| [[Duchess]]
! US
| style="text-align:right;" | 11w0
| style="text-align:right;" | 10w1
| style="text-align:right;" | 7b1
| style="text-align:right;" | 4b0
! 2
| style="text-align:center;" | 8½
| style="text-align:center;" | 4¼
|-
! 6
| [[Chute|Chute 1.2]]
! CA
| style="text-align:right;" | 10b1
| style="text-align:right;" | 2w0
| style="text-align:right;" | 3b0
| style="text-align:right;" | 11w1
! 2
| style="text-align:center;" | 7½
| style="text-align:center;" | 1½
|-
! 7
| [[Tyro]]
! US
| style="text-align:right;" | 2b0
| style="text-align:right;" | 9w1
| style="text-align:right;" | 5w0
| style="text-align:right;" | 12b1
! 2
| style="text-align:center;" | 7
| style="text-align:center;" | 1½
|-
! 8
| [[Ostrich]]
! CA
| style="text-align:right;" | 3b0
| style="text-align:right;" | 12w1
| style="text-align:right;" | 2b0
| style="text-align:right;" | 10w½
! 1½
| style="text-align:center;" | 7½
| style="text-align:center;" | 1
|-
! 9
| [[Awit|Wita]]
! CA
| style="text-align:right;" | 4b0
| style="text-align:right;" | 7b0
| style="text-align:right;" | 11w1
| style="text-align:right;" | 3w0
! 1
| style="text-align:center;" | 8½
| style="text-align:center;" | ½
|-
! 10
| [[Iron Fish]]
! US
| style="text-align:right;" | 6w0
| style="text-align:right;" | 5b0
| style="text-align:right;" | 12w½
| style="text-align:right;" | 8b½
! 1
| style="text-align:center;" | 6½
| style="text-align:center;" | 1
|-
! 11
| [[Black Knight]]
! US
| style="text-align:right;" | 5b1
| style="text-align:right;" | 4w0
| style="text-align:right;" | 9b0
| style="text-align:right;" | 6b0
! 1
| style="text-align:center;" | 6½
| style="text-align:center;" | ¼
|-
! 12
| [[Sortie]]
! US
| style="text-align:right;" | 1w0
| style="text-align:right;" | 8b0
| style="text-align:right;" | 10b½
| style="text-align:right;" | 7w0
! ½
| style="text-align:center;" | 8½
| style="text-align:center;" | ½
|}
* [https://en.wikipedia.org/wiki/ISO_3166-1 CC Country Codes]
* SOS: [https://en.wikipedia.org/wiki/Buchholz_system Sum of Opponent Scores]
* SoDOS: [https://en.wikipedia.org/wiki/Neustadtl_score Sum of Defeated Opponent Scores]
=Participants=
{| class="wikitable"
|-
! Name
! CC
! Authors
! Organization
! Hardware
|-
| [[Black Knight]]
! US
| [[Fred Prouse]], [[Kenn Sogge]],<br>[[Gary Maltzen]], [[Lonny Lebahn]]
| [https://en.wikipedia.org/wiki/UNIVAC Sperry Univac]
| [[UNIVAC 1100]]
|-
| [[CHAOS]]
! US
| [[Mike Alexander]], [[Victor Berman]], [[Ira Ruben]],<br/>[[Fred Swartz]], [[William Toikka]], [[Joe Winograd]]
| [[University of Michigan]]
| [[UNIVAC 1100|UNIVAC 1108]]
|-
| [[Chess (Program)|Chess 4.4]]
! US
| [[David Slate]], [[Larry Atkin]]
| [[Northwestern University]]
| [[CDC Cyber|CDC Cyber 175]]
|-
| [[Chute|Chute 1.2]]
! CA
| [[Michael Valenti]], [[Zvonko Vranesic]]
| [[University of Toronto]]
| [[AMDAHL 470|Amdahl]]
|-
| [[Duchess]]
! US
| [[Eric Jensen]], [[Tom Truscott]], [[Bruce Wright]]
| [[Duke University]]
| [[IBM 370]]
|-
| [[Etaoin Shrdlu]]
! US
| [[Garth Courtois Jr.]]
| [[Michigan State University]]
| [[Nova#1200|Nova 1200]]
|-
| [[Iron Fish]]
! US
| [[Gary Boos]], [[James Mundstock]]
| [https://en.wikipedia.org/wiki/University_of_Minnesota University of Minnesota]
| [[CDC Cyber|CDC Cyber 74]]
|-
| [[Ostrich]]
! CA
| [[Monroe Newborn|Monty Newborn]]
| [[McGill University]]
| [[Nova#2|Nova 2]]
|-
| [[Sortie]]
! US
| [[Stephen F. Becker]]
| [https://en.wikipedia.org/wiki/Bucknell_University Bucknell University]
|
|-
| [[Treefrog]]
! CA
| [[Ron Hansen]], [[Russell Crook]], [[Gary Calnek]]
| [[University of Waterloo]]
| [[Honeywell 6000|Honeywell 6080]]
|-
| [[Tyro]]
! US
| [[Albert Zobrist]], [[Frederic Roy Carlson]]
| [[University of Southern California]]
| [[PDP-10|PDP-10 KL10]]
|-
| [[Awit|Wita]]
! CA
| [[Tony Marsland]]
| [[University of Alberta]]
| [[AMDAHL 470|Amdahl]]
|}
* [https://en.wikipedia.org/wiki/ISO_3166-1 CC Country Codes]
=Photos & Games=
==Round 1==
[[Etaoin Shrdlu]] - [[Ostrich]] <ref>[[David Levy]] (ed.) ('''1988'''). ''[[Computer Chess Compendium]]''. Chapter 9.1 Games from the ACM Tournaments</ref>
<pre>
[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
</pre>
==Round 2==
[[FILE:3-3a.NACCC-Minneapolis.Chess_4.4.Slate-David_Atkin-Larry.1975.102645412.MONTY_NEWBORN.src.lg.jpg|none|border|text-bottom|link=http://www.computerhistory.org/chess/full_record.php?iid=stl-431f4cc15f2c0]]
[[David Slate]] and [[Larry Atkin]] in [[Chess (Program)|Chess 4.4]] vs. [[Etaoin Shrdlu]] <ref>[http://www.computerhistory.org/chess/full_record.php?iid=stl-431f4cc15f2c0 Slate and Atkin at the 6th ACM North American Computer Chess Tournament], 1975, Gift of [[Monroe Newborn]] from [[The Computer History Museum]]</ref>
<pre>
[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
</pre>
Game and short analyze on Lichess.org : [https://en.lichess.org/ed8PdieS]
==Round 4==
[[FILE:3-1.OSTRICH_vs_ETAION_SHRDLU.Newborn_Courtois.ACM_6_NACCC.Minneapolis.1975.102645370.NEWBORN.lg.jpg|none|border|text-bottom|link=http://www.computerhistory.org/chess/full_record.php?iid=stl-430b9bbe09ba4]]
Photo labeled [[Monroe Newborn|Newborn]] and [[Garth Courtois Jr.|Courtois]] shows [[Ostrich]] vs. [[Iron Fish]] after 5... Qa5 <ref>[http://www.computerhistory.org/chess/full_record.php?iid=stl-430b9bbe09ba4 Newborn and Courtois at the 6th ACM North American Computer Chess Championship] Gift of [[Monroe Newborn]] from [[The Computer History Museum]]</ref> <ref>[[David Levy]] (ed.) ('''1988'''). ''[[Computer Chess Compendium]]''. Chapter 9.1 Games from the ACM Tournaments</ref>
<pre>
[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
</pre>
==Levy Simul==
[[FILE:3-1_and_3-3.Atkin.ACM_6_NACCC.Minneapolis.1975.102645358.NEWBORN.lg.jpg|none|border|text-bottom|link=http://www.computerhistory.org/chess/full_record.php?iid=stl-430b9bbdbe635]]
[[Larry Atkin]] during the [[David Levy]] simultaneous exhibition against the 12 computers <ref>[http://www.computerhistory.org/chess/full_record.php?iid=stl-430b9bbdbe635 Atkin at 6th ACM North American Computer Chess Championship in Minneapolis], 1975, Photo by [[Monroe Newborn]] from [[The Computer History Museum]]</ref>
=Reports=
* [[David Levy]] ('''1976'''). ''1975 U.S. Computer chess championship''. Computer Science Press
* [[Monroe Newborn|Monty Newborn]] ('''1977'''). ''[http://www.atariarchives.org/bcc2/showpage.php?page=21 David vs. 12 Goliaths]''. [[Creative Computing#Best2|The Best of Creative Computing Volume 2]], edited by [https://en.wikipedia.org/wiki/David_H._Ahl David Ahl], hosted by [http://www.atariarchives.org/ AtariArchives.org]
* [[Monroe Newborn|Monty Newborn]] ('''1977'''). ''[http://www.atariarchives.org/bcc2/showpage.php?page=22 Summary of the ACM Sixth U.S. Computer Chess Championship]''. [[Creative Computing#Best2|The Best of Creative Computing Volume 2]], edited by [https://en.wikipedia.org/wiki/David_H._Ahl David Ahl], hosted by [http://www.atariarchives.org/ 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=
* [http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/a72e548b90803b83 KRBKB and ACM USCCC #6] by [[Steven Edwards|Steven J. Edwards]], [[Computer Chess Forums|rgcc]], September 29, 1996 » [[Treefrog]], [[David Levy]]
=External Links=
* [http://www.csvn.nl/index.php/historie/computer-computer/88-acm-1975 ACM 1975] [[CSVN]] site
* [http://portal.acm.org/toc.cfm?id=800181&coll=GUIDE&dl=GUIDE&type=proceeding&idx=SERIES324&part=series&WantType=Proceedings&title=ACM%2FCSC-ER&CFID=87593177&CFTOKEN=36310741 Proceedings of the 1975 ACM Annual Conference]
{{ACM Include}}
=References=
<references />
'''[[ACM North American Computer Chess Championship|Up one level]]'''
