Author: Uri Blass
Date: 13:04:14 07/07/02
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On July 07, 2002 at 02:57:26, Kurt Utzinger wrote: >The diagram position stated below is a very hard task for most chess programs. >So far I have found only three programs being abel to produce a solution under >five minutes (all on Ath 1.2/32 MB hash): The latest Movei on p850(128 Mbytes hash tables) can at least find it in less than 10 hours at depth 14(32781.73 seconds to solve the fail high). It needs hardware that is 120 times faster than p850 to solve it in less than 5 minutes. I did the analysis also in order to test stability of Movei and I am happy that it did not crush. I believe that a lot of amateurs including the public Movei are going to fail to solve the problem even after 10 hours on p850. I also believe that special extensions may help to solve it faster but I did not implement them in Movei. Here is part of the debug file that it generated under winboard(I did not teach Movei to count correctly and it is the reason for the negative number of nodes in part of this debug file). 10 113 22360 34400584 a3c5 g8h8 d5c3 a6a8 c3b5 b8c8 c5e5 b7c6 c2c4 h8g8 10 113 33620 52454756 a3c5 g8h8 d5c3 a6a8 c3b5 b8c8 c5e5 b7c6 c2c4 h8g8 11 99 70992 108566072 a3c5 g8h7 d1d2 e6f5 d5b4 g7g6 b4d3 h7g8 c5e5 f7f6 e5c5 11 100 95642 145511832 h2h3 11 104 109269 166065884 h2h3 a5a4 d4b4 b7a7 b1b2 e6d5 d1d5 a7a8 b4b8 a8b8 b2b1 g7g5 d5d7 11 105 182238 282088844 a3a4 11 109 224849 347173227 a3a4 b8c8 d5e3 b7c7 f3f4 f7f5 h2h4 c8f8 a4b5 a6b6 b5a4 11 109 232895 360545606 a3a4 b8c8 d5e3 b7c7 f3f4 f7f5 h2h4 c8f8 a4b5 a6b6 b5a4 12 100 281625 435742183 a3a4 b8c8 d5e3 b7c7 f3f4 f7f5 h2h4 c8f8 c2c4 g7g6 a4b5 a6c6 12 100 603434 948015527 a3a4 b8c8 d5e3 b7c7 f3f4 f7f5 h2h4 c8f8 c2c4 g7g6 a4b5 a6c6 13 104 874299 1358427230 a3a4 b8c8 d4d2 a6a8 a4e4 a8b8 d2d4 c8c5 d1d3 g8f8 d5f4 b7e4 f3e4 13 104 1439652 -2039913489 a3a4 b8c8 d4d2 a6a8 a4e4 a8b8 d2d4 c8c5 d1d3 g8f8 d5f4 b7e4 f3e4 14 104 2589205 -243806471 a3a4 a6a8 h2h4 e6f5 g2g4 f5h7 b1c1 b8e8 d4d2 e8e5 a4d4 f7f6 d5b6 a8e8 d4c4 g8f8 14 105 3093657 568362132 d5f6 14 163 3278173 875020427 d5f6 g7f6 d4d8 g8h7 a3f8 b8d8 d1d8 h7g6 f8g8 g6h5 d8d4 b7b5 g2g3 b5g5 d4h4 g5h4 g3h4 a5a4 g8e8 e6d5 b3a4 d5f3 14 163 3431756 1125772339 d5f6 g7f6 d4d8 g8h7 a3f8 b8d8 d1d8 h7g6 f8g8 g6h5 d8d4 b7b5 g2g3 b5g5 d4h4 g5h4 g3h4 a5a4 g8e8 e6d5 b3a4 d5f3 Uri
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