Author: José de Jesús García Ruvalcaba
Date: 09:19:44 12/20/00
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On December 20, 2000 at 12:17:30, José de Jesús García Ruvalcaba wrote: >On December 19, 2000 at 14:42:18, Laurence Chen wrote: > >>On December 19, 2000 at 04:30:31, Harald Faber wrote: >> >>>[D]8/6KP/2r1k3/8/p7/P7/1P5P/8 b - - 0 0 >>> >>>Test your progs with and without TBs. Which prog needs how long to see that this >>>is not a draw but black wins? >>What if White decides to move his King back and forth between g7 and g8, how can >>Black force the win? >>I do not see that Black can force a win. For example: 1. ... Rc7+ 2. Kg8 > >2... Kf6 3. h8=Q+ Kg6 wins. Or 3. h8=N Rg7+. > >>Rc8+ 3. >>Kg7 Rc7+ 4 Rg8 Rc8+ 5. Kg7 Rc7+ 6. Kg8 draw by 3 fold repetition. or 1. ... Rc7+ >>2. Kg8 Rc2 3. h8(Q) Rc8+ 4. Kg7 Rxh8 5. Kxh8 Kf7 6. K moves and White does not >>need to move any of the pawns. How can Black win then? What is it that I am >>missing? > >Yes, you are missing 2... Kf6! It seems that Jeremiah posted another winning >line. > Sorry, it is obvious that 3. Qh3 refutes Kf6. That happens to me when I try to analyze directly at the computer screen (I need a real chess set!). >>Regards, >>Laurence > >José.
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