Van Leeuwen Tournament 1997

In 1997 I played a tournament between 40 recent and old chess programs.
The playing tempo was for the 486DX2-66 150s/move and for a 486 DX4-133 90s/move.

In addition to well known top programs 4 versions of Vincent Diepeveen's program DIEP and two versions of Maarten Bults' program HECTOR competed. Furthermore I got hold of a CD "Chess Classics" for less then 10 guilders, with 50 different chess programs among which: Comet , Gromit 11, Knighttalker (Fritz1), Waxman 1.4, Ychess en KChess, etc. The CD is for sale in many bookshops. It also contains programs for playing on the Internet.

Ries van Leeuwen

The final ranking:

                                TPR                                         TPR
  1. Genius 3         11 - 9    2533  21.Kasparov GK2000     11 - 5.5       2160
  2. Mchess 5.0       11 - 9    2458  22.Diep 1.56           11 - 5.5       2103
  3. Rebel 8          11 - 8.5  2467  23.Socrates 3.0        11 - 5.5       1993
  4. Kallisto II      11 - 7    2312  24.Rex Chess           11 - 5.5       2140
  5. Rebel 7          11 - 7    2270  25.Mchess 1.40         11 - 5.5       2146
  6. Fritz 3          11 - 7    2230  26.Hector 2            11 - 5         2131
  7. Genius 1         11 - 6.5  2224  27.Schaakmeester 2.0   11 - 5         2016
  8. Mchess 3.5       11 - 6.5  2312  28.CXG Dominator       11 - 5         1979
  9. Chessmaster 4000 11 - 6.5  2266  29.IsiChess 1.21       11 - 5         2059
 10. Diep 1.57.13     11 - 6.5  2230  30.Gromit 11           11 - 5         2022
 11. Genius 2         11 - 6    2241  31.Sargon 5            11 - 4.5       1977
 12. Chessica         11 - 6    2192  32.Comet 32A           11 - 4.5       1896
 13. Virtua Chess     11 - 6    2198  33.Cyrus 1.0           11 - 4.5       1929
 14. Diep 1.57.16     11 - 6    2170  34.Centaur             11 - 4.5       2059
 15. Zarkov 2.6 AEGON 11 - 6    2146  35.Knighttalker        11 - 4         1891
 16. Nimzo 2.1        11 - 5.5  2167  36.Schaak 1.0          11 - 4         1878
 17. Now 1.76         11 - 5.5  2131  37.Waxman 1.4          11 - 3.5       1910
 18. Diep 1.57.12     11 - 5.5  2054  38.Hector 1.01         11 - 3         1856
 19. Rebel Decade 1.2 11 - 5.5  2103  39.Ychess              11 - 2.5       1732
 20. Zarkov 3         11 - 5.5  2124  40.Kchess Windows 1.21 11 - 1.5       1698

The program Schaak 1.0 was released by Data Becker GmbH&Co, Düsseldorf. It is one of many programs from the GOLDEN SERIES. For less than 40 guilders you get a program with a database of 300.000 games. The opening moves are retrieved from the database until the opponent deviates. From the 36th place one may conclude that Schaak does not play very strongly. The BT 2450 test produced an ELO rating of approximately 2000. A booklet translated by Liafbern Riemersma is included.

Selected games:


[Event "Van Leeuwen Tournament"]
[Site "Nieuwegein"]
[Date "1997.??.??"]
[Round "01"]
[White "Rebel 8"]
[Black "Chessmaster 4000"]
[Result "0-1"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Be3 Nf6 7.Bc4 O-O
8.Bb3 d6 9.f3 Bd7 10.Qd2 Nxd4 11.Bxd4 b5 12.h4 a5 13.a4 bxa4 14.Nxa4 e5
15.Be3 Be6 16.Bb6 Qe8 17.Bxe6 Qxe6 18.Bc7 Qc4 19.Bxa5 Bh6! 20.Qc3 Qa6
21.Bb4 Rfc8 22.Qb3 Rab8 23.Ra3 Rxb4 24.Nc5? 0-1


[Event "Van Leeuwen Tournament"]
[Site "Nieuwegein"]
[Date "1997.??.??"]
[Round "01"]
[White "Genius 3"]
[Black "Rebel 7"]
[Result "1-0"]

1.d4 d6 2.e4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 c5 6.Bb5+ Bd7 7.e5 Ng4
8.e6 Bxb5 9.exf7+ Kd7 10.Nxb5 Qa5+ 11.Nc3 h5 12.Qd3 Nc6 13.Qxg6 Bxd4
14.Bd2 Bf2+ 15.Kd1 Qa6 16.f5 Bd4 17.Qe6+ Kd8 18.Kc1 b6 19.Nh4 Nge5
20.Ng6 Nxg6 21.fxg6 Bg7 22.Bg5 Qc8 23.Qxd6+ Qd7 24.Qf4 Qe6 25.Rd1+ Kc8
26.Nd5 Ne5 27.Nxe7+ Kb7 28.Qf5 Qc4 29.Bf6 Bh6+! 30.Kb1 Rhd8 31.Re1 Qe2!
32.Qf1 Qxf1 33.Rxf1 Nc4 34.b3 Ne3 35.Nf5 Nxf1 36.Bxd8 Bf8 1-0


[Event "Van Leeuwen Tournament"]
[Site "Nieuwegein"]
[Date "1997.??.??"]
[Round "01"]
[White "MChess 5.0"]
[Black "Genius 1"]
[Result "1-0"]

1.e4 { Mchess 5.0 was known for its bishop opening namely the Necci attack deadly
to most silicon opponents. In this tournament MCHESS had white against both
Genius 1 and Genius 2. Look what happened: }
e5 2.Bc4 Nf6 3.d4 exd4 4.Nf3 Nxe4 5.Qxd4 Nf6 6.Bg5 Be7 7.Nc3 c6
8.O-O-O d5 9.Rhe1 Be6 10.Qh4 O-O { the error! } 11.Bd3 h6 12.Bxh6 Ne4
13.Qh5 Nxf2 14.Bg5 Nxd3+ 15.Rxd3 Nd7 16.Bxe7 Qxe7 17.Ng5 Nf6 18.Qh4 Qc7
19.Rf1 Rfe8 20.Rxf6 gxf6 21.Qh7+ Kf8 22.Nxe6+ Rxe6 23.Qh8+ Ke7
24.Qxa8 b5 25.h4 Kd7 26.Qg8 Qf4+ 27.Kb1 Qxh4 28.Qxf7+ Re7 29.Qg6 Re1+
30.Nd1 Kc7 31.g3 Qh1 32.Qg7+ Kb6 33.Kc1 Rf1 34.Qf8 a5 35.Qb8+ Ka6
36.Qc7 Qh6+ 37.Kb1 f5 38.a4 b4 39.Qc8+ Ka7 40.Qd7+ Kb8 41.Qd8+ Kb7
42.Qxa5 Qh5 43.Qxb4+ 1-0


[Event "Van Leeuwen Tournament"]
[Site "Nieuwegein"]
[Date "1997.??.??"]
[Round "01"]
[White "MChess 5.0"]
[Black "Genius 2"]
[Result "1-0"]

1.e4 e5 2.Bc4 Nf6 3.d4 exd4 4.Nf3 Nxe4 5.Qxd4 Nf6 6.Bg5 Be7 7.Nc3 c6
8.O-O-O d5 9.Rhe1 Be6 10.Qh4 O-O { the error! } 11.Bd3 h6 12.Bxh6 Ne4
13.Qh5 Nxf2 14.Bg5 Nxd3+ 15.Rxd3 Nd7 16.Bxe7 Qxe7 17.Ng5 Nf6 18.Qh4 Qc7
19.Rf1 Rfe8 20.Rxf6 gxf6 21.Qh7+ Kf8 22.Nxe6+ Rxe6 23.Qh8+ Ke7
24.Qxa8 b5 25.g3 b4 26.Nd1 Qb6 27.h4 Re1 28.h5 Rh1 29.h6 f5 30.Qh8 f4
31.gxf4 1-0


[Event "Van Leeuwen Tournament"]
[Site "Nieuwegein"]
[Date "1997.??.??"]
[Round "01"]
[White "Genius 3"]
[Black "MChess 5.0"]
[Result "1-0"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Ndb5 d6 7.Bf4 e5 8.Bg5 a6
9.Na3 b5 10.Nd5 Be7 11.Bxf6 Bxf6 12.Nb1 Rb8 13.Nd2 Bg5 14.Nf3 O-O
15.Be2 Bh6 16.O-O f5 17.exf5 Bxf5 18.c4 bxc4 19.Bxc4 Kh8 20.Qa4 Na5
21.Bxa6 Rxb2 22.Qa3 Rb8 23.Be2 Be6 24.Ne3 Ra8 25.Qd3 Rf4 26.Qc2 Rc8
27.Qb2 Nc6 28.a3 e4 29.Nd2 d5 30.Nc2 Qg5 31.Kh1 Rf6 32.Rad1 Rcf8 33.Qb6 Ne7
34.f4 Qg6 35.Qb4 Qf7 36.g3 Bh3 37.Rfe1 g5 38.fxg5 Bxg5 39.Qd4 Nc6
40.Qc3 Rc8 41.Nf1 Na5 42.Qb2 Qg7 43.Qb1 Be6 44.Nd4 Bd7 45.Nb5 Qf7
46.Qb2 Rc5 47.Nd6 Qe6 48.Nb5 Kg8 49.Qb4 Nb7 50.Nd4 Qh3 51.Kg1 Bc8
52.Qb2 Bh6 53.Nb3 Rb6 54.Qa2 Rc3 55.Nd4 Qd7 56.a4 Rf6 57.a5 Nc5 58.Qa1 Rd3
59.Bxd3 Nxd3 60.Re2 Qh3 61.Rb1 Rf7 62.a6 Ra7 63.Qa5 Qd7 64.Rb8 Bf8
65.Ne3 Rxa6 66.Qxd5+ Qxd5 67.Nxd5 Bg4 68.Rd2 Kg7 69.Rb7+ Kg6 70.Kg2 Rd6
71.Rb5 Bg7 72.Ne2 Bd7 73.Ra5 Kf7 74.Rda2 Bg4 75.Ra7+ Kg8 76.Ra8+ Bf8
77.Ne3 Bf3+ 78.Kg1 Rb6 79.Nc3 Rc6 80.Ned5 Re6 81.Rb8 e3 82.R2a8 Bxd5
83.Rxf8+ Kg7 84.Rg8+ Kh6 85.Rge8 e2 86.Rxe6+ Bxe6 87.Nxe2 Bd5
88.Ra7 Be4 89.Re7 Bf5 90.Kg2 Ne1+ 91.Kf2 Nc2 92.Nf4 Nd4 93.h3 Kg5
94.Rf7 Bg6 95.h4+ Kh6 96.Rd7 Nf5 1-0


[Event "Van Leeuwen Tournament"]
[Site "Nieuwegein"]
[Date "1997.??.??"]
[Round "01"]
[White "MChess 3.5"]
[Black "VirtuaChess"]
[Result "0-1"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d4 exd4 7.Re1 b5 8.e5 Nxe5
9.Rxe5 d6 10.Re1 bxa4 11.Nxd4 Bd7 12.Qf3 O-O 13.Nc6 Bxc6 14.Qxc6 d5
15.Bg5 a3 16.c4 axb2 { end of openingbook for both colours. }
17.Nc3 bxa1=Q 18.Rxa1 0-1


[Event "Van Leeuwen Tournament"]
[Site "Nieuwegein"]
[Date "1997.??.??"]
[Round "01"]
[White "MChess 5.0"]
[Black "Rebel 8"]
[Result "1-0"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 b5
9.Nd5 Be7 10.Bxf6 Bxf6 11.c3 Bb7 12.Nc2 Nb8 13.Nce3 Nd7 14.g3 O-O
15.h4 Nc5 { end of openingbook.} 16.Bg2 g6 17.Qe2 Rb8 18.O-O Bg7
19.Rfd1 Bc6 20.Rab1 Rc8 21.Rbc1 Bh6 22.Rc2 Kh8 23.c4 Bxe3 24.Qxe3 bxc4
25.Rxc4 Ba4 26.b3 Bb5 27.Rc2 f6 28.Qh6 Rf7 29.Rdc1 Qf8 30.Qe3 a5 31.Qd2 Ra8
32.Rc3 Rb8 33.R1c2 Bc6 34.Qd1 Rfb7 35.Kh2 Qf7 36.Ne3 Qe7 37.Rd2 Bxe4
38.Rxc5 Bxg2 39.Rxa5 Bc6 40.Rxd6 Bf3 41.Qd2 Rc8 42.R5a6 f5 43.Re6 Qg7
44.Rad6 Rf8 45.Rd8 f4 46.Qd6 Kg8 47.R6e8 Rbf7 48.Nd5 fxg3+ 49.Kxg3 Bxd5
50.Qxd5 1-0


[Event "Van Leeuwen Tournament"]
[Site "Nieuwegein"]
[Date "1997.??.??"]
[Round "01"]
[White "RexChess"]
[Black "Chessica"]
[Result "0-1"]

1.e4 e6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Nd7 5.Nf3 Ngf6 {Ncf6} 6.Bg5 Be7
7.Nxf6+ Nxf6 8.Bd3 O-O 9.O-O b6 10.Qe2 Bb7 11.Be3 c5 12.dxc5 bxc5
13.Rfd1 Qb8 14.Bc1 Rd8 15.Ne5 Rd5 16.Bf4 Bd6 17.Re1 c4 18.Bxc4 Rd4
19.Nxf7 Bxf4 20.Qxe6 Bxh2+ 21.Kh1 Bxg2+ 22.Kxg2 Rg4+ 23.Kf1 Rg1+
24.Ke2 Rxe1+ 25.Rxe1 Qf4 26.Kf1 g6 27.Kg2 Re8 28.Nh6+ Kh8 29.Nf7+ Kg7
30.Nd8 Qg5+ 31.Kxh2 Qh4+ 32.Kg2 Rxe6 33.Nxe6+ Kh8 34.b3 Qg4+
35.Kf1 Qh3+ 36.Ke2 Ne4 37.Nd4 Qh2 38.Ra1 Qf4 39.Kd3 Nxf2+ 40.Kc3 Qe3+
41.Bd3 h5 42.Kc4 g5 43.Be2 h4 44.Kd5 g4 45.Bb5 h3 46.Kc4 Ne4 47.Kd5 g3
48.Bd3 Nf6+ 0-1


[Event "Van Leeuwen Tournament"]
[Site "Nieuwegein"]
[Date "1997.??.??"]
[Round "01"]
[White "Kallisto II"]
[Black "Fritz 3"]
[Result "1/2-1/2"]

1.d4 d5 2.c4 dxc4 3.e4 c5 4.d5 b5 5.Nc3 Qa5 6.Bd2 Nd7 7.Nf3 Bb7 8.a3 g6
9.a4 b4 10.Qc2 Bh6 11.Nd1 Bxd2+ 12.Nxd2 c3 13.bxc3 Rb8 14.Bb5 Ngf6
15.Rb1 bxc3 16.Nxc3 O-O 17.Nc4 Qc7 18.f3 a6 19.Bxd7 Nxd7 20.O-O Ne5
21.Ne2 Nxc4 22.Qxc4 Rfd8 23.Rfc1 Rdc8 24.Rb3 Qd6 25.Rcb1 Rc7 26.Rb6 Qd7
27.Nf4 Rd8 28.Nd3 Qc8 29.Rc1 Qa8 30.Nxc5 Qa7 31.Qb4 a5 32.Qb5 Rdc8
33.Rc4 h6 34.Rc2 Kh7 35.Rc1 Kg8 36.Rc3 Kh7 37.f4 Qa8 38.Rc1 Bxd5
39.Ra6 Rxc5 40.Rxc5 Rxc5 41.Qxc5 Qxa6 42.exd5 1/2-1/2


[Event "Van Leeuwen Tournament"]
[Site "Nieuwegein"]
[Date "1997.??.??"]
[Round "01"]
[White "YChess"]
[Black "Schaak 1.0"]
[Result "1-0"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 Qc7 6.Be2 b5 7.O-O Bb7 8.Re1 Nc6
9.Nxc6 dxc6 10.e5 Rd8 11.Bd3 c5 12.Qe2 Ne7 13.Bg5 h6 14.Bh4 g5
15.Bg3 Bg7 16.a4 c4 17.Be4 Bxe4 18.Nxe4 O-O 19.Nd6 Qb6 20.Qh5 Ng6
21.Ra3 Qa5 22.Rea1 b4 23.Re3 Qd5 24.Rae1 Qd2 25.Qd1 Qxd1 26.Rxd1 h5
27.h3 h4 28.Bh2 c3 29.bxc3 bxc3 30.Rde1 Nxe5 31.Bxe5 Bxe5 32.Rxe5 Rxd6
33.Rxg5+ Kh7 34.Re4 Kh6 35.Rc5 Rd1+ 36.Kh2 Rd2 37.Rxh4+ Kg7 38.Rg4+ Kh6
39.f4 Rd4 40.Kg3 f5 41.Rh4+ Kg7 42.Rc6 Rxa4 43.Rxe6 Rd8 44.Rc6 Ra3
45.Rc7+ Kg8 46.Rc5 Rd6 47.Rxf5 1-0