Author: Enrique Irazoqui
Date: 09:31:02 05/06/03
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On May 06, 2003 at 12:23:37, Olaf Jenkner wrote: >On May 06, 2003 at 07:32:45, Enrique Irazoqui wrote: > >>Another study of Grigoriev, this time a mate in 11. >> >>[D]4Q3/4pp2/8/1p5P/1P1p2p1/K7/1p3P2/k7 w - - 0 1 >> >>Grigoriev,N - Study >>1934 >> >>1.Qd8 e5 2.Qg5 f6 3.Qh6 f5 4.Qg5 b1Q 5.Qd2 f4 6.h6 g3 7.h7 g2 8.h8Q g1Q 9.Qxd4+ >>exd4 10.Qxd4+ Qb2+ 11.Qxb2# # 1-0 >> >>Enrique > >After 8.h8Q black plays better Qd4+ and the mate comes one move later. > >A brute force search did not find a mate in 13. > >Olaf Jenkner 8... Qd4+ is not possible. Which line makes it longer than mate in 11? Enrique
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