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Schak-H, (Schak-123, Schak123)
an early chess program by Hans, Henk and Bert van der Liet ^[1]. Schak-123 aka Schak-H ran on a self built system around the Signetics 2650 microprocessor, and was entirely programmed in machine language, the opcode entered via a bank of toggle-switches for address and data input ^[2]. In 1978, Schak123 played one of the first matches between Dutch chess programs via telephone, and lost from IGM by Peter van Diepen ^[3]. In 1978, it also played some sparring games versus Joost Buijs' early Nightmare ^[4]. Schak-H played the first official Dutch Computer Chess Championship, the DOCCC 1981, and the Group B of the DOCCC 1985.

Photos

Schak-H and Henk van der Liet (?) [5]

Selected Games

DOCCC 1981, PK80 - Schak-H

[Event "DCCC 1981"]
[Site "Utrecht NED"]
[Date "1981.09.25"]
[Round "1-3"]
[White "PK80"]
[Black "Schak-H"]
[Result "0-1"]
 
1.e4 d5 2.exd5 Qxd5 3.Nc3 Qe5+ 4.Nce2 f6 5.d4 Qd6 6.Bf4 e5 7.Be3 Qb4+ 8.c3 Qxb2 
9.Qa4+ Nc6 10.Rd1 exd4 11.Rxd4 Be6 12.Nf3 Qb1+ 13.Nc1 Nh6 14.Bc4 Bxc4 15.Qxc4 
Nxd4 16.Qa4+ Nc6 17.Qd1 Rd8 18.Qa4 Nf5 19.O-O Bd6 20.Qc4 Ke7 21.Rd1 Bxh2+ 
22.Kxh2 Rxd1 23.Bc5+ Kd7 24.Qf7+ Nce7 25.Ne2 Rh1# 0-1

See also

• SCHK-Y

Publications

• Henk van der Liet (1982). Schak-H. in Peter van Diepen (ed.) (1982). Toernooibulletin van het Nederlands kampioenschap computerschaak 1981. De Deelnemers. pdf hosted by Hein Veldhuis » DOCCC 1981

External Links

• Prehistorie van het Nederlandse Computerschaak (Dutch)
• Eerste Nederlands Kampioenschappen Computerschaken (Dutch)

References

1. ^ Peter van Diepen (ed.) (1982). Toernooibulletin van het Nederlands kampioenschap computerschaak 1981 - Tabel 3. Deelnemers. pdf hosted by Hein Veldhuis
2. ^ Re: Nightmare games from WCRCC 2013 by Joost Buijs, CCC, July 22, 2013
3. ^ Prehistorie van het Nederlandse Computerschaak (Dutch)
4. ^ Re: Nightmare games from WCRCC 2013 by Joost Buijs, CCC, July 22, 2013
5. ^ Image from Henk van der Liet (1982). Schak-H. in Peter van Diepen (ed.) (1982). Toernooibulletin van het Nederlands kampioenschap computerschaak 1981. De Deelnemers. pdf hosted by Hein Veldhuis » DOCCC 1981

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