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Subject: Jon Dart - Arasan Bug ??

Author: Dan Honeycutt

Date: 19:21:47 06/15/04


Arasan 7.4 seems to have a bug where it wants to avoid a draw by insufficient
material at all costs - even at the expense of losing!?.  In the following
position, instead of capturing the black pawn the white king stalked it down the
h file, fled toward the center of the board and then resigned when it could no
longer stop the pawn.

[D]8/7p/8/2k3K1/8/8/8/8 w - - 0 81


[Event "Test06_10"]
[Site "APPLE"]
[Date "2004.06.14"]
[Round "16"]
[White "Arasan"]
[Black "Movei"]
[Result "0-1"]
[ECO "C43"]
[Opening "Petrov"]
[Time "22:23:06"]
[Variation "Modern Attack, Symmetrical Variation"]
[TimeControl "40/300:40/300:40/300"]
[Termination "normal"]
[PlyCount "172"]
[WhiteType "program"]
[BlackType "program"]

1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.dxe5 Bc5 5.Be3 Bxe3 6.fxe3 Ng5 7.Qd5 Nxf3+ 8.gxf3
Nc6 9.Nc3 O-O 10.O-O-O Qe7 11.f4 d6 12.Bb5 Nb4 13.exd6 Nxd5 14.dxe7 Nxe7 15.e4
Bg4 16.Rd3 c6 17.Rg1 Bc8 18.Bc4 b5 19.Bb3 a5 20.a3 b4 21.Na4 Ng6 22.Rdg3 Nxf4
23.R3xg7+ Kh8 24.Kd2 Be6 25.R7g3 f5 26.Bxe6 Nxe6 27.exf5 Rxf5 28.Kc1 Nd4 29.R3g2
Re8 30.Rh1 Ne2+ 31.Kb1 bxa3 32.bxa3 Nf4 33.Rf2 Re2 34.Rf3 Rd2 35.Nb2 Rd4 36.Rhf1
Kg7 37.c3 Re4 38.Nd3 Rb5+ 39.Kc1 Ng6 40.R3f7+ Kh6 41.R1f6 Re2 42.Rxc6 Rg5
43.Rcf6 Rg1+ 44.R6f1 Rxf1+ 45.Rxf1 Rxh2 46.Rf6 Ra2 47.Ra6 Rxa3 48.Kb2 Ra4 49.Nc5
Rh4 50.Rxa5 Ne5 51.Kb3 Kg6 52.Ne6 Nf3 53.Nf8+ Kf6 54.Nd7+ Ke6 55.Nf8+ Kd6
56.Ra6+ Kd5 57.Ra5+ Kd6 58.Ra6+ Kd5 59.Nd7 Nd2+ 60.Kc2 Ne4 61.Ra5+ Kd6 62.Ne5
Nc5 63.c4 Rh5 64.Nf7+ Kc7 65.Kd1 Kd7 66.Ke2 Ke7 67.Nh6 Kd6 68.Rb5 Re5+ 69.Kf3
Kc6 70.Rb8 Rh5 71.Rc8+ Kd6 72.Nf7+ Kd7 73.Kg4 Kxc8 74.Kxh5 Kd7 75.Ng5 Nd3 76.Ne4
Ne5 77.c5 Kc6 78.Kh6 Nd7 79.Kg5 Nxc5 80.Nxc5 Kxc5 81.Kg4 h6 82.Kf5 h5 83.Kg5 h4
84.Kg4 h3 85.Kf4 h2 86.Kg3 {White resigns} 0-1

Dan H.



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