Author: Mihaly Szalai
Date: 12:35:48 08/22/03
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On August 22, 2003 at 14:35:51, John Merlino wrote: >On August 22, 2003 at 12:09:36, Mihaly Szalai wrote: > >>John, >> >>Chessmaster doesn't show the main variation: >> >>[D]8/3p1P2/3Pp3/2p1P2K/p1p3P1/PpP3p1/1P3pP1/6k1 w - - 0 1 >> >>1. f8=R f1=Q 2. Rxf1+ Kxf1 3. g5 Kxg2 4. g6 Kh2 5. g7 g2 6. g8=Q g1=Q 7. Qxg1+ >>Kxg1 8. Kg6 Kf2 9. Kf6 Ke2 10. Ke7 Kd2 11. Kxd7 Kc2 12. Kxe6 Kxb2 13. d7 Kxa3 >> >>and at this juncture: >> >>[D]8/3P4/4K3/2p1P3/p1p5/kpP5/8/8 w - - 0 14 >> >>white has to underpromote again in order to win... >> >>Mihaly > >Fair enough. > >However, I think that asking an engine to find an underpromotion 27 ply away >from the current position is a bit much. AND it looks like finding the >underpromotion from THIS position requires at least a dozen ply search. So, >you're asking the engine to search 40 plies from the initial position in order >for it to give a correct answer. > >Can you tell me an engine that can do this? I looked at the other replies so far >and none of them have done it. > >jm You are right - I should have added both diagrams. I posted this position for it's aesthetic values - and thought that some people will find it interesting enough for further inspection. (Didn't even occured to me that an engine will show the 'whole' solution from the initial position.) Mihaly
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