Author: leonid
Date: 06:00:10 02/18/01
Go up one level in this thread
On February 17, 2001 at 14:52:18, Heiner Marxen wrote: >On February 15, 2001 at 06:10:16, leonid wrote: > >>Hi! >> >>If you like solve one forced mate, you can try this: >> >>[D]3BQnQN/3b3q/2Q3rn/KR2Qqbk/1R2Qqrn/2Q4b/3b1n1q/1Q1BQ1QN w - - >> >>Please, indicate your result. >> >>If you could bring one position of forced mate found during the chess >>chapionship (human player) it will be very appreciated. >> >>Thanks, >>Leonid. > >If I followed correctly the answers of the others, this has solutions >in nine moves. After 26 hours on a K7/600 (350 MB hash) Chest found >a mate in 8 moves, that does not start with a checking move, and leaves >black with 35 legal answers. Obviously, that is not the path the playing >programs like to follow. ;-) Thanks, Heiner! Now I see why this position is not at all "easy". Shortest move that lead to mate have nothing to do with checking move, like I found with selective move in 10. Will go back to see, just curious, but I think that nobody found mate in 8 after your message. Regards, Leonid. >Here are the main lines after 1.Qxh7, one for each answer: > >Bxd8+ Qxd8 Nxh7 Ng3+ Qhxg3 Qxh4+ Kxh4 Qcxg3+ Rxg3 Nxg6+ Kg5 Qe7+ Nf6 Qexf6# >Bxe8 Bxg4+ Bxg4 Qxg4+ Nxg4 Q4xf5 Bc1 Ng3+ Qfxg3 Qhxg6+ =*= Qxg5+ Bxg5 Qxg5# >Be6 Qxh2 Bc4 Ng3+ Qxg3 Q4xf5 Be2 Nxg6 Nf3 Nxf8+ Kh4 Qhxh6# >Bxc6 Qxg4+ Bxg4 Q4xf5 Bd5 Qxh6+ Kxh6 Qexg6+ Nfxg6 Qg7+ Kh5 Qh7# >Q4xe4 Qxg4+ Bxg4 Qhxg6+ Nfxg6 Qcxg6+ Nxg6 Qxg6+ Kh4 Qxh6+ Bh5 Qxh5# >Be7 Qhxg6+ Nfxg6 Qexg6+ Nxg6 Qxg6+ Kh4 Bxe7+ Qf6 Qeh5# >Bf6 Qcxf6 Q4g5 Qgxh2 Bf4 Ng3+ Bxg3 Qxg5+ Qxg5 Qxg5# >Bxc3 Qhxg6+ Nfxg6 Qexg6+ Nxg6 Qxg6+ Qxg6 Qxg6+ Kh4 Qxh6# >Bxe1 Qhxg6+ Nfxg6 Qexg6+ Nxg6 Qxg6+ Qxg6 Qxg6+ Kh4 Qxh6# >Q5xe4 Qhxg6+ Nfxg6 Qexg6+ Nxg6 Qxg6+ Qxg6 Qxg6+ Kh4 Qxh6# >Qe6 Qxh6+ Kxh6 Q8xg6+ Nhxg6 Qxg6+ Nxg6 Qg7+ Kh5 Qh7# >Qf3 Qhxg6+ Nfxg6 Qexg6+ Nxg6 Qxg6+ Qxg6 Qxg6+ Kh4 Qxh6# >Qf6 Qxh6+ Kxh6 Q8xg6+ Qxg6 Qexg6+ Nfxg6 Qg7+ Kh5 Qh7# >Qf7 Qxh6+ Kxh6 Qexg6+ Qxg6 Qexg6+ Nfxg6 Qg7+ Kh5 Qh7# >Qfg3 Qhxg6+ Nfxg6 Qexg6+ Nxg6 Qxg6+ Qxg6 Qxg6+ Kh4 Qxh6# >Qhg3 Qhxg6+ Nfxg6 Qexg6+ Nxg6 Qxg6+ Qxg6 Qxg6+ Kh4 Qxh6# >Ne6 Qhxg6+ Nxg6 Qxg6+ Qxg6 Qxg6+ Kh4 Qxh6# >Nf3 Qxh6+ Bxh6 Qexg6+ Nxg6 Qxg6+ Rxg6 Qxg6# >Ng2 Qxh6+ Kxh6 Qexg6+ Nxg6 Qxg6+ Qxg6 Qxg6# >Nxd1 Qhxg6+ Qxg6 Q8xg6+ =*= Qexg6+ Nxg6 Qcxg6# >Nxh7 Qexg6+ Nxg6 Qxg6+ Qxg6 Qxg6+ Kh4 Qxh6# >Q5xe5 Qxh6+ =*= Q8xg6+ =*= Qexg6+ Nxg6 Qcxg6# >Nd3 Qxh4+ Bxh4 Qhxg6+ Nxg6 Qexg6# >Nxe4 Qxh4+ Bxh4 Qhxg6+ Nxg6 Qexg6# >Nxh1 Qxh4+ Bxh4 Qhxg6+ Nxg6 Qexg6# >-*- Qhxg6+ Nfxg6 Qexg6+ Nxg6 Qxg6+ Qxg6 Qxg6+ Kh4 Qxh6# > >Legend: =*= any legal move > -*- any other legal move > >Heiner
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