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Subject: Re: Test Position; Polugayevsky - Maslov, Moscow 1963

Author: Jonathan Kreuzer

Date: 12:35:42 11/01/03

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The best move is Be6!! after which black is defenseless. (Found in 23 seconds.)
My first thoughts were that I had bugs in my program, but I tried a couple blitz
test games (against Crafty and Ruffian) and it seems to all check out okay.
(Crafty and Ruffian both were very soon mated.)
Every once in a while my program finds tactically strong moves like this, but it
still can't play a decent game of chess.

Computer: AMD Athlon 1.4Ghz
Fen: 3rrk2/2p1n1bQ/1p3pp1/1q2B1N1/p1b1PP2/6PB/P1P5/3R1RK1 w - - 0 1

no    4        10   -182        19705 d1xd8 e8xd8 e5c3 c4xf1 h3xf1
no    4        30   -182        32703 e5d4 {++}
no    4        60   -150        68718 d1d3 {++}
no    4        80   -139        93361 d1d3 b5c5+ f1f2 d8xd3 c2xd3 c4xa2
no    5       140   -185       157532 d1d3 c4g8 g5e6+ g8xe6 h3xe6 b5c5+ f1f2
                                      f6xe5 f4xe5
no    5       140   -185       161977 d1xd8 {++}
no    5       220   -175       249172 e5c3 {++}
no    5       390   -163       449140 e5c3 b5c5+ g1h2 c4xa2 d1xd8 e8xd8
no    6       570   -337       643628 e5c3 b5c5+ g1h1 c4g8 c3xf6 g7xf6 g5e6+
                                      g8xe6 h3xe6 d8xd1 f1xd1 c5xc2
no    6       580   -337       652770 d1xd8 {++}
no    6      1280   -177      1452238 d1xd8 e8xd8 e5a1 b5c5+ g1h1 c4xa2 f1c1
no    7      1510   -241      1686237 d1xd8 e8xd8 e5a1 b5c6 f1e1 c4g8 h7h4
                                      f6xg5 a1xg7 f8xg7 h4xg5
no    7      1790   -241      1985000 e5xf6 {++}
no    7      2480   +357      2844782 e5xf6 g7xf6 h3e6 f6g7 h7h4 c4xe6 g5xe6+
                                      f8f7 e6xd8+ f7g8
no    8      2910   +378      3356888 e5xf6 g7xf6 h3e6 f6g7 h7h4 c4xe6 g5xe6+
                                      f8g8 d1xd8 e8xd8 e6xd8
no    8      4010   +378      4758273 e5xf6 g7xf6 h3e6 f6g7 h7h4 c4xe6 g5xe6+
                                      f8g8 d1xd8 e8xd8 e6xd8
no    9      5330   +356      6299402 e5xf6 g7xf6 h3e6 f6g7 h7h4 c4xe6 g5xe6+
                                      f8g8 d1xd8 e8xd8 e6xd8 g7d4+ g1g2
no    9     10020   +356     12241098 e5xf6 g7xf6 h3e6 f6g7 h7h4 c4xe6 g5xe6+
                                      f8g8 d1xd8 e8xd8 e6xd8 g7d4+ g1g2
no   10     14170   +158     17075271 e5xf6 g7xf6 h3e6 f6g7 h7h4 c4xe6 g5xe6+
                                      f8g8 d1xd8 e8xd8 h4xe7 g7d4+ e6xd4 d8xd4
no   10     22740   +158     27301094 h3e6 {++}
no   10     32700   +553     39167302 h3e6 b5c5+ g1h1 d8xd1 f1xd1 c4d3 e5xf6
                                      d3xe4+ g5xe4 c5h5+ h7xh5 g6xh5 f6g5 e7g6
                                      f4f5
no   11     43460   +868     51429422 h3e6 b5c5+ g1h1 d8xd1 f1xd1 f6xe5 f4f5
                                      c5d6 d1xd6 e8c8 d6d7 c4xe6 g5xe6
no   11     65410   +868     79733909 h3e6 b5c5+ g1h1 d8xd1 f1xd1 f6xe5 f4f5
                                      c5d6 d1xd6 e8c8 d6d7 c4xe6 g5xe6
no   12    101030  +1207    122683324 h3e6 b5c5+ g1h1 d8xd1 f1xd1 c5xe5 f4xe5
                                      f6xg5 e6xc4 e8c8 c4e6 c8b8 d1f1+ e7f5
                                      e4xf5 g7xe5 f5xg6



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