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Home * Engines * Plymate

1986 Playmate of the Year [1]

a series of chess programs by Ulf Rathsman and Lars Hjörth written in Assembly to run on 6502 based dedicated chess computers with up to 8 MHz. Plymate was marketed as cartridge for Conchess computers [2], and was further incorporated inside the Mephisto MM II by Hegener & Glaser [3]. Plymate played four ICGA world computer chess tournaments, the WMCCC 1985, WCCC 1986, the WMCCC 1987 and the commercial group of the WMCCC 1988.

Photos & Games

WMCCC 1985


WMCCC 1985, Lars Hjörth and Ulf Rathsman congratulate Richard Lang who prematurely won the title with Mephisto Amsterdam 1 [4] [5]

[Event "WMCCC 1985"]
[Site "Amsterdam, The Netherlands"]
[Date "1985.09.13"]
[Round "6"]
[White "Plymate Y"]
[Black "Mephisto Amsterdam 1"]
[Result "0-1"]

1.e4 c6 2.c4 d5 3.exd5 cxd5 4.d4 Nf6 5.Nc3 e6 6.Bf4 Nc6 7.cxd5 Nxd5 8.Nxd5 Qxd5 
9.Nf3 Qe4+ 10.Be3 Bb4+ 11.Ke2 O-O 12.Ng5 Qf5 13.f4 Be7 14.Qb1 Qg4+ 15.Nf3 Bd6 
16.h3 Qg3 17.Ng5 f5 18.Qc1 Bd7 19.Nf3 Rac8 20.Qd1 Bxf4 21.Bxf4 Qxf4 22.Kf2 Nb4 
23.g3 Qe4 24.Rh2 Rc2+ 25.Kg1 Qe3+ 26.Kh1 Bc6 27.Bg2 Nd3 28.Qxc2 Nf2+ 29.Qxf2 Qxf2 
30.Ne5 Qxb2 31.Rd1 Ba4 32.Bf3 Qc3 33.Rb1 Qxd4 34.Re2 Bd1 35.Rg2 Bxf3 36.Nxf3 Qe4 
37.Nd2 Qd5 38.Nb3 Qd3 39.Nd2 b6 40.Rb3 Qc2 41.Nf3 Qc7 42.Rd3 e5 43.Rdd2 e4 44.Rc2 
Qd6 45.Nd2 e3 46.Nc4 Qd3 47.Nb2 Qd5 48.a4 Rd8 49.Kh2 g5 50.Rc3 Qe5 51.Rcc2 Kf8 
52.Nc4 Qe4 53.Nb2 h5 54.Rge2 f4 55.gxf4 gxf4 56.Rc4 Qf3 57.Rcc2 Qg3+ 58.Kh1 h4 
59.a5 bxa5 60.Rg2 Qxh3+ 61.Kg1 f3 62.Rh2 Qg3+ 63.Kf1 0-1 

WCCC 1986


WCCC 1986, Round 2, Plymate vs. Mephisto X, Ulf Rathsman, Richard Lang and Ossi Weiner [6] [7]

[Event "WCCC 1986"]
[Site "Cologne, Germany"]
[Date "1986.06.12"]
[Round "2"]
[White "Plymate"]
[Black "Mephisto X"]
[Result "1-0"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.Bc4 e6 7.N1e2 Nf6 8.Nf4 Bd6 
9.Nxg6 hxg6 10.O-O b5 11.Be2 Ne4 12.Bg4 Qh4 13.Bh3 Ng5 14.Bxg5 Qxg5 15.Qd3 Nd7 
16.Ne4 Qd5 17.a4 Bc7 18.axb5 cxb5 19.Nc3 Qd6 20.f4 b4 21.Nb5 Qb6 22.Qc4 Kd8 
23.Kh1 a6 24.Nxc7 Qxc7 25.Qb3 Qc6 26.Qxb4 Rxh3 27.Qa5+ Ke8 28.d5 Qxc2 29.gxh3 Qe4+ 
30.Kg1 Qd4+ 31.Rf2 exd5 32.Qc7 Qe3 33.Qd6 Rb8 34.b4 Qe4 35.Qxa6 Qxb4 36.Qc6 Qd4 
37.Re1+ Kd8 38.Qc2 Nf6 39.Rc1 Qb6 40.Kh1 Ne4 41.Rff1 Rb7 42.Qc8+ Ke7 43.Rfe1 Rd7 
44.Qh8 Qf6 45.Rf1 Rd8 46.Qh7 Kd7 47.Rcd1 Nc3 48.Rd3 Ra8 49.Rc1 Rc8 50.Re1 d4 
51.Rg3 Ra8 52.Rg2 Nd5 53.f5 Ne3 54.Rd2 Qc6+ 55.Kg1 Qc3 56.Rde2 Ra1 57.Qh4 gxf5 
58.Rxa1 Qxa1+ 59.Re1 Qb2 60.Qg3 g6 61.Qf3 f6 62.Qa8 f4 63.Ra1 Qb5 64.Qe4 Qg5+ 
65.Kh1 Qd5 66.Qxd5+ Nxd5 67.Rd1 Ke6 68.Rxd4 Ke5 69.Ra4 Nc3 70.Ra3 Nd5 71.Kg1 Ke4 
72.Kf2 g5 73.h4 Ne3 74.Ra4+ Kf5 75.h5 Ng4+ 76.Kg2 Ne5 77.Ra7 Ng4 78.h3 Nh6 79.Rh7 
Ng8 80.h6 Kg6 81.Rg7+ Kxh6 82.Rxg8 Kh7 83.Rc8 f5 84.Rf8 Kg7 85.Rxf5 Kg6 86.Rd5

See also

External Links

Chess Program


List of Playboy Playmates of the Year
List of Playboy Playmates of the Month


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