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Subject: Re: "avoid move" position

Author: Robert Hyatt

Date: 19:49:16 05/13/03

Go up one level in this thread


On May 12, 2003 at 17:10:26, Dieter Buerssner wrote:

>On May 12, 2003 at 16:51:09, Jon Dart wrote:
>
>> 7r/4k3/5bRP/5P1P/5K2/8/8/8 w - -
>>Crafty does not ever want to play Rg7+, but in analysis mode, it takes a long
>>time to see that this is not a good move:
>
>I cannot understand this. Crafty does not want to play it, but shows it in
>analyse mode?

He meant "annotate mode".  The clue was "searching only the move played in
the game" as output by crafty.  :)


>
>>               16->   2:03   0.00   135. Rg7+ Bxg7 136. hxg7 Ra8 137. Kg5
>>                                    Kf7 138. f6 Ra1 139. Kf5 Rg1 140. h6
>>                                    Rf1+ 141. Kg4 Rxf6 142. Kh5 Rxh6+ 143.
>>                                    Kxh6 Kg8 144. Kg5 Kxg7
>>               17     2:03     --   135. Rg7+
>>               17     5:37  -1.95   135. Rg7+ Bxg7 136. hxg7 Ra8 137. Kg5
>>                                    Kf7 138. f6 Ra2 139. Kg4 Rg2+ 140.
>>                                    Kf5 Rg1 141. h6 Rh1 <HT>
>>               17->   5:37  -1.95   135. Rg7+ Bxg7 136. hxg7 Ra8 137. Kg5
>>                                    Kf7 138. f6 Ra2 139. Kg4 Rg2+ 140.
>>                                    Kf5 Rg1 141. h6 Rh1 <HT>
>>
>
>Yace does not want to play this move. I may depend a bit on the setup (for
>examples which TBs are available). If I force Rg7, I see Mate in 28 for black
>rather soon:
>
>1...Bxg7 2.hxg7 Rd8 3.Kg5 Kf7 4.f6 Rd2 5.Kf4
>Rg2 6.Kf5 Rg1 7.h6 Rh1 8.Kg5 Rh2 9.g8=Q+ Kxg8
>{EGTB} 10.Kg6! Rg2+ 11.Kf5! Kf7! 12.h7 Rh2!
>13.Kg5 Rxh7! 14.Kf5! Rh8 15.Ke5 Rd8! 16.Kf5!
>Re8! 17.Kg5! Re6 18.Kf5! Re1! 19.Kg5 Rf1!
>20.Kg4! Kxf6 21.Kg3! Rf5 22.Kg4 Kg6! 23.Kh4
>Rg5! 24.Kh3 Kh5! 25.Kh2 Kh4! 26.Kh1 Kg3! 27.Kg1
>Rf5! 28.Kh1 Rf1#! {500}
>
>Regards,
>Dieter



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