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Home * Engines * YNCT

YNCT, (You Never Can Tell)
a chess program by Luuk de Vries, written in Z80 assembly or even Machine Code to ran on a Sharp MZ-80 [1]. YNCT 1.0 won the First Dutch Computer Chess Championship 1981, and YNCT 2.0 was runner-up at the DOCCC 1982.



YNCT 1.0 on a Sharp MZ-80 operated by Luuk de Vries [2]

Selected Games

Chess 0.5X

DOCCC 1982, round 1, Chess 0.5X - YNCT 2.0

[Event "DOCCC 1982"]
[Site "Wageningen NED"]
[Date "1982.09.24"]
[Round "1-3"]
[White "Chess 0.5X"]
[Black "YNCT 2.0"]
[Result "0-1"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 
9.d3 Be6 10.Nbd2 Bxb3 11.Nxb3 a5 12.a4 b4 13.cxb4 Nxb4 14.Be3 Ng4 15.Qe2 Nxe3 
16.fxe3 f5 17.exf5 Rxf5 18.Rf1 Qc8 19.e4 Rf6 20.Rac1 Kh8 21.Nbd2 Qd7 22.d4 exd4 
23.Nxd4 Rxf1+ 24.Nxf1 Rf8 25.Ne3 g6 26.Nf3 c5 27.b3 Qa7 28.Rf1 Rf6 29.Ng4 c4+ 
30.Kh1 cxb3 31.Nxf6 Bxf6 32.Nd2 Bg7 33.Qb5 Qa8 34.Nxb3 h5 35.Qxa5 Qxe4 36.Qd8+ 
Kh7 37.Qxd6 Nd3 38.a5 Qe2 39.Kg1 Qe3+ 40.Kh1 Nf2+ 41.Kg1 Nh3+ 42.Kh1 Qg1+ 
43.Rxg1 Nf2# 0-1

Gambiet 82

DOCCC 1982, round 8, YNCT 2.0 - Gambiet 82

[Event "DOCCC 1982"]
[Site "Wageningen NED"]
[Date "1982.09.26"]
[Round "7-9"]
[White "YNCT 2.0"]
[Black "Gambiet 82"]
[Result "0-1"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 
9.h3 Na5 10.Bc2 Qd7 11.d4 Nc6 12.dxe5 dxe5 13.Qe2 Rd8 14.a4 b4 15.Be3 bxc3 
16.Nxc3 Bb4 17.Rad1 Qe7 18.Rf1 Be6 19.Rxd8+ Qxd8 20.Rd1 Qc8 21.Nd5 Bxd5 
22.exd5 Ne7 23.Bg5 Nexd5 24.Nxe5 Qe6 25.Bxf6 Nxf6 26.Bd3 Re8 27.f4 Qb6+ 
28.Kh1 a5 29.Bb5 c6 30.Bxc6 Qxc6 31.Ra1 Nd7 32.Qh5 Nxe5 33.fxe5 Qe4 34.Rc1 
Qxe5 35.Qxe5 Rxe5 36.Rc8+ Bf8 37.Kh2 Re4 38.b3 Re3 39.Rb8 f6 40.Kg1 Kf7 
41.Rb7+ Be7 42.Kf2 Rc3 43.h4 h5 44.Rb5 Bc5+ 45.Ke2 Re3+ 46.Kd2 Re5 47.Kd3 
Bf2 48.Rxe5 fxe5 49.Ke4 Kf6 50.Kf3 Bxh4 51.g4 hxg4+ 52.Kxg4 Be1 53.Kf3 g5 
54.Ke2 Bb4 0-1


External Links


  1. Eerste Nederlands Kampioenschappen Computerschaken (Dutch)
  2. Image from Luuk de Vries (1982). YNCT. 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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