Author: Albert Silver
Date: 16:50:08 09/10/05
Go up one level in this thread
On September 09, 2005 at 21:27:06, Roy Brunjes wrote:
>On September 09, 2005 at 20:27:54, Dieter Buerssner wrote:
>
>>On September 08, 2005 at 12:31:10, Albert Silver wrote:
>>
>>>Still, even if one advances these moves, where 3.Kh6 is indeed the only winning
>>>move, you're correct about the difficulty for engines.
>>>
>>>[D]5k2/5p1K/P2p1p2/1B2pP2/3bP2P/8/8/8 w - - 0 3
>>>
>>>3.h5 clearly throws away any chance of a win, yet I just saw Shredder 8 (don't
>>>have v.9), Junior 9, DF8, and Hiarcs 9 all chooose it. I'll just note that Fruit
>>>2.1 drops h5 for Kh6 after about 2 seconds.
>>
>>Albert (or anybody else=, can you show some analysis lines of Fruit for this
>>pos?
>>
>>Yace nees a long time ...
>>
>> 668520401 11:40.8 0.98 28. 3.Bc6 Ba7 4.Kh8 Bd4 5.Bd5 Be3 6.Bb7 Bd4 7.Kh7
>> Be3 8.h5 Bd4 9.Bd5 Be3 10.Bc4 Bd4 11.h6 Be3
>> 12.Kh8 Bd4 13.Bd3 Be3 14.Kh7
>>1044772924 18:51.4 0.99 29t 3.Bc6 Ba7 4.Kh8 Bd4 5.Bd5 Be3 6.Bb7 Bd4 7.Kh7
>> Be3 8.h5 Bd4 9.Bd5 Be3 10.Bc4 Bd4 11.h6 Be3
>> 12.Kh8 Bd4 13.Bd3 Be3 14.Kh7 Bc5 15.Bb5 Be3
>> 16.Bc4 Ke7 17.Bd5 {0}
>>1146164333 20:35.4 0.99 29. 3.Bc6 Ba7 4.Kh8 Bd4 5.Bd5 Be3 6.Bb7 Bd4 7.Kh7
>> Be3 8.h5 Bd4 9.Bd5 Be3 10.Bc4 Bd4 11.h6 Be3
>> 12.Kh8 Bd4 13.Bd3 Be3 14.Kh7 Bc5 15.Bb5 Be3
>> 16.Bc4 Ke7 17.Bd5 {0}
>>2078651734 38:30.1 0.99 30t 3.Bc6 Ba7 4.Kh8 Bd4 5.Bd5 Be3 6.Bb7 Ba7 7.Kh7
>> Bd4 {HT}
>>2317340930 42:48.3 1.00 30t+ 3.Bc4 Ba7 4.h5 Ke7
>>2654851941 48:48.0 1.00 30t 3.Bc4 Ba7 4.h5 Bb8H {HT}
>>3149578469 58:15.1 1.01 30t+ 3.h5 Ba7 4.Bc4 Bd4
>>3162803564 58:29.2 1.01 30t 3.h5 Ba7 4.Bc4 {HT}
>> 101275029 1:20:04 1.02 30t+ 3.Kh6 Ba7 4.Kh5 Bd4
>> 895704143 1:33:30 1.39 30++ 3.Kh6 Ba7 4.Kh5 Bd4
>>1779136065 1:48:11 2.39 30++ 3.Kh6 Ba7 4.Kh5 Bd4 5.Be2 Ba7
>>2646313273 2:02:42 2.39 30t 3.Kh6 Ba7 4.Kh5 Kg7H 5.Be2H {HT}
>>2835001603 2:06:00 2.39 30. 3.Kh6 Ba7 4.Kh5 Kg7 5.Be2
>> 810842047 2:44:45 2.61 31t 3.Kh6 Ba7 4.Kh5 Kg7 5.Kg4 Bb6 6.Kf3 Kh6 7.Ke2
>> Kh5 8.Kd3 Kxh4 9.Kc4 Bc5 10.Be8 Kg3 11.Bxf7 Ba7
>> 12.Kb5 Kh4 13.Bd5 Bf2 14.Kc6 Kg3 15.Kb7 Kf3
>> 16.a7 Bxa7 {HT} {-80}
>>1201438911 2:51:39 2.61 31. 3.Kh6 Ba7 4.Kh5 Kg7 5.Kg4 Bb6 6.Kf3 Kh6 7.Ke2
>> Kh5 8.Kd3 Kxh4 9.Kc4 Bc5 10.Be8 Kg3 11.Bxf7 Ba7
>> 12.Kb5 Kh4 13.Bd5 Bf2 14.Kc6 Kg3 15.Kb7 Kf3
>> 16.a7 Bxa7 {HT} {-80}
>> 823366282 3:59:04 2.70 32t 3.Kh6 Ba7 4.Kh5 Kg7 5.Kg4 Bb6 6.Kf3 Kh6 7.Ke2
>> Kh5 8.Bc4 Kxh4 9.Bxf7 {HT}
>>1358772169 4:08:40 2.70 32. 3.Kh6 Ba7 4.Kh5 Kg7 5.Kg4 Bb6 6.Kf3 Kh6 7.Ke2
>> Kh5 8.Bc4 Kxh4 9.Bxf7
>>3513748656 6:01:57 3.10 33++ 3.Kh6 Ba7 4.Kh5 Kg7 5.Kg4 Bb6 6.Kf3 Kh6 7.Ke2
>> Kh5 8.Bc4 Kxh4 9.Bxf7 Kg3 10.Kd3 Kf4 11.Bd5 Bf2
>> 12.Kc4 Ba7 13.Kb5 Bc5 14.Kc6 Ke3 15.Kb7 Kf2
>>
>>Regards,
>>Dieter
>
>
>Dieter,
>
>Here is Fruit 2.1 analysis after about 1.5 minutes :
>
>FEN: 5k2/5p1K/P2p1p2/1B2pP2/3bP2P/8/8/8 w - - 0 3
>
>Fruit 2.1:
> 26/57 01:19 76.622.119 966.489 +1.06 Kh6 Bf2 Kh5 Ke7 Kg4 Kf8 Kf3 Bd4 Kg2 Kg7
>Kg3 Bc5 Kg4 Bd4 Bc4 Be3 Kf3 Bd4 h5 Bc5 Bb3 Bb6 Bd5 Bd4 Ke2 Bb6
>
>Not that big a difference in eval between h5 and Kh6 it seems, but still Kh6 is
>preferred by Fruit.
>
>Hardware: Centrino 1.5 GHz 256 MB RAM for hashtables for Fruit.
>
>Roy
I'll just add that although it doesn't show Ke2 after Kf3, when it gets that
far, it plays Ke2 very quickly, so there is no doubt that in a game it would
play the winning maneuver.
Albert
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