Author: Roy Eassa
Date: 10:14:37 10/01/03
Go up one level in this thread
On September 30, 2003 at 06:22:24, José de Jesús García Ruvalcaba wrote: >On September 29, 2003 at 09:46:08, Uri Blass wrote: > >>On September 29, 2003 at 09:39:44, Uri Blass wrote: >> >>>On September 29, 2003 at 09:36:29, Uri Blass wrote: >>> >>>>On September 29, 2003 at 08:47:20, Drexel,Michael wrote: >>>> >>>>>On September 29, 2003 at 08:36:33, Uri Blass wrote: >>>>> >>>>>>On September 29, 2003 at 07:08:48, Drexel,Michael wrote: >>>>>> >>>>>>>On September 29, 2003 at 06:36:42, José de Jesús García Ruvalcaba wrote: >>>>>>> >>>>>>>>On September 29, 2003 at 06:31:13, Drexel,Michael wrote: >>>>>>>> >>>>>>>>>On September 29, 2003 at 06:21:18, José de Jesús García Ruvalcaba wrote: >>>>>>>>> >>>>>>>>>>[D] 8/8/p4Bp1/1pPb2P1/1P2kp2/P7/5K2/8 w >>>>>>>>>>From Bellon-Minic, only 41. c6!! draws, all other moves lose. >>>>>>>>>>José. >>>>>>>>> >>>>>>>>> >>>>>>>>>Are you sure >>>>>>>>>Show me how to win with black after 41.Bd8 for example. >>>>>>>>> >>>>>>>>>Michael >>>>>>>> >>>>>>>>After Bd8, black plays Bc6!, then f3, then the black king goes to capture the >>>>>>>>a3-pawn, then return to e4 and puts white in Zugzwang. >>>>>>>>José. >>>>>>> >>>>>>>Hmm, maybe you can do some triangulation with the King before playing a5. >>>>>>>I am not sure though. >>>>>>>I also dont see why c6 should be a draw then. >>>>>>>How did the game end? >>>>>>> >>>>>>>Michael >>>>>> >>>>>>I did not analyze it but after c6 the white bishop can protect b4 from e7 >>>>> >>>>>I also can not analyze it now. >>>>>If the c6 pawn and the a3 pawn are gone and white protects b4 from e7, how can >>>>>white prevent black from playing Ka4 followed by a5? >>>>> >>>>>Michael >>>> >>>>You are right and it seems not possible and maybe the idea of white is that >>>>after c6 the move Bb6 prevents f2 so the white bishop should go to a5 to prevent >>>>a5 or to b6 to prevent f2 dependent on the black king. >>>> >>>>Uri >>> >>>The only problem is that I do not see at this moment how can black get f2 when >>>the white king is always at f2 and I do not see the zugzwang even with the pawn >>>c5. >>> >>>Uri >> >>The idea of black may be a5 at some point when bxa5 lose against b4 and Bxa5 >>lose against Kxg5 >>I still do not see exactly how it is prevented without the pawn at c5. >> >>Uri > >Hi, >after 41. Bd8? Bc6! black can reach the following position: >[D] 3B4/8/p1b3p1/1pP3P1/1P2K3/5p2/5K2/8 b >and then play 58... Kf4. As you noted, the bishop moves lose, and if 59. Kf1 >then black replies Ke3 and wins. >Without the white pawn at c5, white can expel the black king with Bb6+ >Since the losing variations involve a deep Zugzwang, this must be a really hard >nut to crack for computers (it is also difficult for humans) >José. With White having two kings and Black having zero, I don't like Black's chances one bit. ;-)
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