Author: Ricardo Gibert
Date: 23:34:01 10/21/03
Go up one level in this thread
On October 21, 2003 at 18:04:35, Matthew White wrote: >On October 21, 2003 at 17:58:03, Matthew White wrote: > >>On October 21, 2003 at 14:09:10, Jouni Uski wrote: >> >>>[D] 2r1N2B/PP1RqP1Q/K2nnq1R/Npk3q1/3q1qQr/2qbbQ2/1P1Q3q/1q1B1Q2 w - - >>> >>>It's interesting to test this under Fritz8 GUI with 2,4 GHz PC: >>> >>>Fritz: no solution in 5 minutes (depth still 1 ply!) >>>Yace: no solution in 5 minutes >>>Ruffian: 26 seconds to bxc8R and 10x announcement >>>Shredder: crash after 2 minutes (in shredder704.dll)! >>> >>>Finally the truth = analysis by ChestUCI Ver 2.6: >>> >>>1.Qxc3+ Qxc3 2.bxc8Q+ Nxc8 3.Qc6+ Kb4 4.Qxc3+ Qxc3 5.Bxc3+ Kc5 6.Nb3+ Kc6 >>>7.Rxe6+ Qed6 8.Rexd6+ Nxd6 9.a8Q+ Nb7 10.Qxb7# >>> +- (#10) Depth: 10 00:23:02 >>>1.bxc8R+ Nxc8 2.Qc6+ Kb4 3.Qcxc3+ Qxc3 4.Qxc3+ Qxc3 5.Bxc3+ Kc5 6.Nb3+ Kc6 >>>7.Rxe6+ Qed6 8.Rexd6+ Nxd6 9.a8Q+ Nb7 10.Qxb7# >>> +- (#10) Depth: 10 00:23:02 >>>1.bxc8Q+ Nxc8 2.Qc6+ Kb4 3.Qcxc3+ Qxc3 4.Qxc3+ Qxc3 5.Bxc3+ Kc5 6.Nb3+ Kc6 >>>7.Rxe6+ Qed6 8.Rexd6+ Nxd6 9.a8Q+ Nb7 10.Qxb7# >>> +- (#10) Depth: 10 00:23:02 >>> >>>Jouni >>Maybe the difficulty has to do with the fact that this is a technically illegal >>position. It is impossible to have that many Queens on the board with any pawns >>left. >> >>Just a guess. >> >>Matt > >I just realized that I can't count :). > >Please disregard the previous post. > >Matt Consider these 3 facts: 1- White has double pawns. 2- for White to have double pawns, you must make a capture. 3- Black has all 16 men on the board. Conclusion: Black would have to start with at least 17 men, therefore the position must be illegal.
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