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DenverHilton.jpg

The ACM's Sixteenth North American Computer Chess Championship (NACCC) took place from October 13-15, 1985, Radisson Hotel [1] [2] [3] , Denver, Colorado, USA. Special purpose hardware chess entity HiTech by a team from Carnegie Mellon University headed by Hans Berliner won its first official computer chess tournament conveniently with a perfect score of 4 out of 4, winning from Lachex, Phoenix, Bebe and Cray Blitz.
Denver Radisson, now the Sheraton [4]

Final Standing

[5]
#
Name
CC
1
2
3
4
P
SOS
SoDOS
1
HiTech
US
7w1
4b1
2b1
5w1
4


2
Bebe
US
9b1
5b1
1w0
4w1
3
9
5
3
Intelligent Software
GB
6b1
9w1
5b0
7w½



4
Phoenix
CA
8b1
1w0
7b1
2b0
2
10
3
5
Cray Blitz
US
10b1
2w0
3w1
1b0
2
10
3
6
CHAOS
US
3w0
7b0
8b1
10w1
2
6
2
7
Lachex
US
1b0
6w1
4w0
3b½

10½

8
Spoc
US
4w0
10b1
6w0
9b½


1
9
Ostrich
CA
2w0
3b0
10w½
8w½
1

1
10
Awit
CA
5w0
8w0
9b½
6b0
½

½

Participants

[6] [7]
Program
CC
Team
Hardware
Language
NPS
Awit
CA
Tony Marsland
Amdahl 5860/2
Algol W
10
Bebe
US
Tony Scherzer
Bit slice
chess hardware
Assembly
20,000
CHAOS
US
Mike Alexander,
Fred Swartz,
Jack O’Keefe
Amdahl 5860
Fortran
70
Cray Blitz
US
Robert Hyatt,
Albert Gower,
Harry Nelson
Cray X-MP4
Fortran,
Assembly
100,000
HiTech
US
Carl Ebeling,
Hans Berliner,
Gordon Goetsch,
Andy Palay,
Murray Campbell,
Larry Slomer
Sun Workstation &
special purpose
hardware
C
175,000
Intelligent Software
GB
Mark Taylor,
David Levy,
Kevin O’Connell
6502 Apple IIe
Assembly
500
Lachex
US
Burton Wendroff
Cray X-MP 48
Fortran,
Assembly
50,000
Ostrich
CA
Monroe Newborn
1 x Eclipse,
6 x Nova 4,
1 x Nova 3
Assembly
1,200
Phoenix
CA
Jonathan Schaeffer
4 x VAX11/780
6 x Sun Workstation
C
540
Spoc
US
Jacques Middlecoff
IBM PC
8086 Assembly
300

Photos & Games

Cray Blitz - Bebe

After three years without a loss, reigning World Champion Cray Blitz lost from Bebe in round two and HiTech in round four [8] :
[Event "ACM 1985"]
[Site "Denver USA"]
[Date "1985.10.13"]
[Round "2"]
[White "Cray Blitz"]
[Black "Bebe"]
[Result "0-1"]
 
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Bg5 Bg7 7.Qd2 Nc6 8.O-O-O O-O
9.Nb3 Re8 10.Bc4 Ng4 11.h3 Nge5 12.Bb5 a6 13.Be2 a5 14.Bb5 Be6 15.Nd5 a4 16.Nd4
Bd7 17.Nxc6 bxc6 18.Nxe7+ Rxe7 19.Bxe7 Qxe7 20.Be2 Qe6 21.Kb1 Rb8 22.b3 axb3
23.cxb3 Be8 24.Kc2 Nd7 25.f3 Ra8 26.Kc1 Nc5 27.Qc2 Qf6 28.Bc4 Qa1+ 29.Kd2 Qxa2
30.Qxa2 Rxa2+ 31.Kc1 d5 32.exd5 cxd5 33.Bxd5 Bb5 34.Rhe1 Nd3+ 35.Rxd3 Bxd3
36.Re8+ Bf8 37.g4 Kg7 38.Re3 Ba3+ 39.Kd1 Ra1+ 40.Kd2 Bf1 41.Kc3 Rc1+ 42.Kd2 Rc5
43.Ke1 Bxh3 44.Bc4 h5 45.gxh5 gxh5 46.Kf2 h4 47.Rd3 Bf5 48.Rd4 h3 49.Rh4 Rc7
50.Rh5 0-1

HiTech - Cray Blitz

acm85-hitech-crayblitz.jpg
Mike Valvo, Hans Berliner, Murray Campbell and Robert Hyatt, Tony Scherzer watching after 51 ... Bf8 [9] [10]
[Event "ACM 1985"]
[Site "Denver USA"]
[Date "1985.10.15"]
[Round "4"]
[White "Hitech"]
[Black "Cray Blitz"]
[Result "1-0"]
 
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 5.Nxc6 bxc6 6.Bd3 d5 7.Qe2 Bg4 8.f3 Be6
9.exd5 Nxd5 10.Bf5 Qh4+ 11.Kf1 Qf6 12.Bxe6 Qxe6 13.c4 Qxe2+ 14.Kxe2 Nb6 15.b3
Bd6 16.Nc3 O-O 17.Be3 Be5 18.Rac1 Rfe8 19.Kf2 Rad8 20.f4 Bf6 21.Rhd1 Rxd1 22.Nxd1
h5 23.Nc3 Kh7 24.Ne2 Rd8 25.Kf3 Kg6 26.Ng3 h4 27.f5+ Kh7 28.Ne4 Be7 29.Kg4 Re8
30.Bf2 Nd7 31.Kh3 a6 32.Rd1 Nf6 33.Re1 Nxe4 34.Rxe4 Kg8 35.Bd4 Kf8 36.c5 f6
37.Rxh4 Rd8 38.Rh8+ Kf7 39.Rxd8 Bxd8 40.Kg4 Be7 41.h4 Ke8 42.Kf4 Bd8 43.g4 Be7
44.Ke4 Bd8 45.Be3 Be7 46.a4 Kd8 47.Kd4 Kc8 48.g5 fxg5 49.hxg5 Kd8 50.Ke5 Kd7
51.f6 Bf8 52.a5 g6 53.Bd4 1-0

Aftermath

A few months later, during the WCCC 1986 in Cologne after the loss in round 2 from Bobby, Robert Hyatt found some suspicious pawn hole code in Cray Blitz, already implemented in summer 1985 after test games versus a Super Constellation, scoring better against that particular opponent, but apparently causing Cray Blitz to play passively against tactical stronger programs. After removing the few lines of pawn hole code, Cray Blitz could take revenge versus Bebe and finally HiTech to defend its title [11] .

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External Links


References

  1. ^ Opened in 1959 as the Denver Hilton, designed by Araldo Cossutta and I. M. Pei, was also a Radisson before joining the Adam's Mark chain (1995). It has since been reflagged as a Sheraton Hotel - Adam's Mark from Wikipedia
  2. ^ I. M. Pei Hilton, Denver :: Western History
  3. ^ I. M. Pei Paraboloid, Denver :: Western History
  4. ^ Image Denver Hilton from Zeckendorf Plaza | The Denver Eye, the former Hilton is now operated as Sheraton Denver Downtown Hotel
  5. ^ ACM 1985 CSVN site
  6. ^ David E. Welsh (1985). ACM's Sixteenth North American Computer Chess Championship. ICCA Journal, Vol. 8, No. 4
  7. ^ ACM Computer Chess Championship by Stuart Cracraft, Usenet, November 2, 1985
  8. ^ Alexander Keewatin Dewdney (1986). The King (A Chess Program) Is Dead, Long Live The King (A Chess Machine). Scientific American, 1986-02, pdf from The Computer History Museum
  9. ^ Image by David E. Welsh, from David E. Welsh (1985). ACM's Sixteenth North American Computer Chess Championship. ICCA Journal, Vol. 8, No. 4
  10. ^ Other Image by Carl Iwasaki, Time & Life Pictures/Getty, "Hans Berliner with his Hitech computer and Robert Hyatt with Cray X-MP 48 computer using his 'Blitz' program during a computer chess tournament in which Hitech won"
  11. ^ Re: Did Cray Blitz really have a win? by Robert Hyatt, rec.games.chess.misc, March 12, 1999

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