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Subject: Re: Test Position:Queen endings [spike after 13 depths]

Author: Uri Blass

Date: 06:52:06 09/07/05

Go up one level in this thread


On September 07, 2005 at 09:05:49, Ignacio Santos Crespo wrote:

>On September 07, 2005 at 05:25:27, Madhavan wrote:
>
>>[D] 8/6k1/8/3pKQpP/3p4/8/8/3q4 w - - 0 1
>>
>>White to play and win.
>>
>>FEN: 8/6k1/8/3pK1QP/3p4/8/8/3q4 b - - 0 1
>>
>Chest 4.2 needs 1 second for the mate in 16:
>8/6k1/8/3pKQpP/3p4/8/8/3q4 w - - bm #16; 00:01 @ C0/R-12/K4/P4/X19;
>
>FEN: 8/6k1/8/3pKQpP/3p4/8/8/3q4 w - - 0 1
>
>ChestUCI Ver.4.2:
>CPU: AMD64 3200+
>FEN: 8/6k1/8/3pKQpP/3p4/8/8/3q4 w - -
>Search for 1. Special-Mate [C0/R-12/K4/P4/X19] in 16 ...  (Hash=412MB)
>  16	00:03	     198.719	553.534	+M16	h5h6+
>Search completed ...  (Time=1.98s)
>Mate in 16 found !  (1. Solution in 00:01)
> 16/16	00:03	   1.146.948	578.098	+M16	h5h6+ Rg7xh6 Re5f6 Dd1h5 Df5d3 Dh5e8
>Dd3h3

For comparison shredder9's analysis at move 8
Shredder is uncapble of getting depth 5 even after a long time.


New game, 38'/40+38'/40+38'/40
8/8/5K1k/3p2pq/8/7Q/8/8 w - - 0 1

Analysis by Shredder 9 UCI:

8.Qxh5+
  -+  (-5.17)   Depth: 1/2   00:00:00
8.Qxh5+
  -+  (-5.17)   Depth: 1/2   00:00:00
8.Qg2
  -+  (-3.15)   Depth: 1/3   00:00:00
8.Qg2
  -+  (-3.15)   Depth: 1/3   00:00:00
8.Qg2
  =  (-0.01)   Depth: 2/3   00:00:00
8.Qg2 Qd1
  =  (-0.01)   Depth: 2/3   00:00:00
8.Qg2 Qd1
  =  (-0.01)   Depth: 3/3   00:00:00
8.Qg2 Qd1
  =  (-0.01)   Depth: 4/4   00:00:00

(,  07.09.2005)

Uri



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