Author: Mike Byrne
Date: 12:22:12 08/22/03
Go up one level in this thread
On August 22, 2003 at 14:50:09, Mike Byrne wrote:
>On August 22, 2003 at 14:39:35, José de Jesús García Ruvalcaba wrote:
>
>>On August 22, 2003 at 09:55:42, Mike Byrne wrote:
>>
>>>On August 22, 2003 at 09:42:38, Alastair Scott wrote:
>>>
>>>>[D]8/p2k2p1/1p6/5P1p/P5P1/5K1P/8/8 w - - 0 48
>>>>
>>>>How long does your engine take to see that gxh5 loses?
>>>>
>>>>(A surprisingly long time in some cases - for example, 12 seconds for Ruffian
>>>>1.0.1, Athlon XP 2600+, 512MB RAM, 32MB hash).
>>>>
>>>>Alastair
>>>
>>>show me the win after gh5 , I can't find it ....and neither can crafty or
>>>shredder
>>
>>It is very easy, black puts his king of f6, then creates a passed pawn with a6
>>and b5, and the captures all white pawns on the kingside. The only thing white
>>can try is to left black with an h-pawn, but that still loses. A posible
>>variation
>>1. gxh5? Ke7 2. h4 Kf6 3. Ke4 a6 4. h6 gxh6 5. h5 b5 6. axb5 axb5 7. Kd5 Kxf5 8.
>>Kc5 Kg5 9. Kxb5 Kg4 10. Kc4 Ke3 and black wins
>>White can also try leaving the pawn in h3 or h4, or moving the king first to f4
>>instead of e4, but after 1. gxh5? black wins.
>>José.
>
>nice try,but it doesn't work
>
>
>1. gxh5? Ke7 2. Ke4! {h4? does lose} Kf6 3. Kd5 ! and after the pawns on the
>Q-side cpme off, it is a draw - Black cannot force a win on the K-side.
I'm not even sure 2. h4 loses now - but the draw is much harder.. 4. h6 is move
that loses without any doubt.
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