Author: John Merlino
Date: 12:31:34 12/01/04
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On December 01, 2004 at 14:42:06, Tony Nichols wrote: >On December 01, 2004 at 14:28:44, John Merlino wrote: > >>On December 01, 2004 at 14:06:54, Tony Nichols wrote: >> >>>On December 01, 2004 at 13:16:06, Dann Corbit wrote: >>> >>>>On December 01, 2004 at 10:13:56, Tony Nichols wrote: >>>> >>>>>I was looking at a study in chessbase 8 that is a mate in three. Unable to solve >>>>>it myself I fired up Shredder 8. To my surprise Shredder claimed it was a mate >>>>>in 5!? Deep Fritz 8 also said mate in 5. When I played the key move both engines >>>>>saw the mate in 2! Other engines found the mate in 3 immediately(Hiarcs 9, Chess >>>>>Tiger 15, Gambit Tiger 2.0, Crafty 19.17 etc.). If someone would tell me how to >>>>>post the position I will. Has anyone else had similiar problems? >>>> >>>>What is the position you are looking at? >>>Hi Dan >>>I don't know how to post the position. If you tell me how I will post it. >>>Regards >>>Tony >>>P.S. it is a study by Milan Vukcevich >> >>You can just describe the position (which pieces are on which squares, and whose >>side to move it is) and somebody else can convert it to the proper format. >> >>Or, if you know how to convert the position into a FEN string, just put a line >>in your post that has a [D] at the beginning and then paste the FEN string >>immediately after it. That will do the trick. >> >>jm >ok here goes [D]3K1B2/2pPPp2/7R/2k2r2/7q/P2Q4/8/8 w - - 0 1 >wKd8,Qd3,Bf8,Rh6,Pa3,d7,e7/bKc5,Qh4,Rf5,Pc7,f7 CM9000 also finds it in a handful of milliseconds. It is possible, since some solution paths require underpromotions (e.g. 1.Ra6 Qc4 2.e8=N+! Kb5 3.Nxc7#), that this could be the reason that some engines don't find the mate in 3. jm
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