Author: Robin Smith
Date: 17:04:23 02/09/06
Go up one level in this thread
On February 09, 2006 at 19:03:23, Terry McCracken wrote: >On February 09, 2006 at 17:27:35, Uri Blass wrote: > >>On February 09, 2006 at 13:00:39, Andreas St. wrote: >> >>>Hi, >>>yesterday i posted this position: >>> >>>2r5/2pR1pk1/p1P3p1/P2K4/5P1p/5P1P/8/8 w - - 0 1 >>> >>>and some users said, Rybka finds the solution. >>> >>>>Not Rybka 13b, but Rybka 1.0 Beta 32-bit (the first version!!!) >>>>Best regards, >>>>Orlando >>> >>>>Rybka 1.0 Beta 32-bit, sees Rxc7 quickly. I've no idea how the person testing >>>>whatever version had this failure. >>> >>>>Terry >>> >>> >>>What do you mean??? No Rybka version finds the only winning move Rxc7! >> >> >>Are you sure that it is the only winning move. >>Do you have a proof that f5 does not win? > >1. f5?! wins but isn't as good as the simple Rxc7! Hi Terry, I believe after 1.f5? that white has thrown away the win. For example: 1.f5? g5! 2.Rxc7 Rxc7 3.Kd6 Rc8 4.Kd7 Ra8 5.c7 Kf6 6.c8Q Rxc8 7.Kxc8 Kxf5 8.Kb7 Ke5 9.Kxa6 f5 = What line leads you to believe white can still win after 1.f5? -Robin > >Terry >> >> >>>If you analyse long enough, you will see, all Rybka versions prefers f5. >>>At the latest after one hour no Rxc7, but f5! >>>And look at the score of rybka. He sees nothing in this position. >>>Fritz 9 for example has +3.50 after 42sec. >>>Shredder 9 after 0 sec.! After 17sec. Score +3.05 >> >>As Albert silver proved high score proves nothing here and Fritz9's score goes >>down later. >> >>Uri
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