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

Author: Christian Koch

Date: 07:14:38 09/07/05

Go up one level in this thread


On September 07, 2005 at 09:52:06, Uri Blass wrote:

>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


Strange behaviour from your Shredder:

Here Shreder 9 undere Arena 1.1
FEN: 8/8/5K1k/3p2pq/8/7Q/8/8 w - - 0 1

Shredder 9.1 UCI:
  1/1-	00:00	           0	0	-M15	Qh3xh5+
  1/1	00:00	           0	0	-M15	Qh3xh5+
  1/1+	00:00	           1	66	-M16	Kf6e5
  1/3	00:00	           4	266	-14,24	Kf6e5 Qh5xh3 Ke5xd5
  1/3+	00:00	          21	1.400	-3,15	Qh3g2
  1/3	00:00	          22	1.466	-3,15	Qh3g2
  2/5	00:00	          62	2.000	-3,07	Qh3g2 d5d4
  2/5+	00:00	          84	2.709	-3,06	Qh3d3
  2/5	00:00	         102	3.290	-2,82	Qh3d3 g5g4
  3/6	00:00	         207	4.404	-2,81	Qh3d3 g5g4 Qd3e3+ Kh6h7
  4/8	00:00	         731	15.553	-2,95	Qh3d3 d5d4 Qd3e4 d4d3
  4/11+	00:00	       1.031	21.936	-2,94	Qh3f5
  4/11	00:00	       1.088	23.148	-2,94	Qh3f5 d5d4 Kf6e5 g5g4
  5/11	00:00	       1.524	24.580	-2,70	Qh3f5 d5d4 Qf5d3 Qh5e8 Kf6f5
  5/11+	00:00	       1.630	26.290	-2,69	Qh3d3
  5/11+	00:00	       1.986	15.888	-1,00	Qh3d3
  5/11	00:00	       2.038	16.304	-1,00	Qh3d3 d5d4 Qd3e4 g5g4 Qe4f4+
  6/11	00:00	       2.856	18.307	-1,00	Qh3d3 d5d4 Qd3e4 g5g4 Qe4f4+ Kh6h7 Qf4xd4
  7/10+	00:00	       4.334	19.880	-0,01	Qh3d3 d5d4
  7/13	00:00	       4.863	22.307	+0,01	Qh3d3 Qh5e8 Qd3h3+ Qe8h5
  7/13+	00:00	       5.374	22.965	+8,41	Qh3f5
  7/13	00:00	       5.560	23.760	+8,41	Qh3f5 d5d4 Qf5e4 g5g4 Qe4f4+ Kh6h7 Qf4c7+
Qh5f7+ Kf6xf7
  8/12+	00:00	       6.111	24.444	+8,68	Qh3f5 d5d4
  8/12+	00:00	       6.212	24.848	+9,27	Qh3f5 d5d4
  8/13	00:00	       7.416	27.984	+M9	Qh3f5 d5d4 Qf5e4 d4d3 Qe4xd3
  9/14	00:00	       9.509	33.839	+M9	Qh3f5 d5d4 Qf5e4 d4d3 Qe4xd3
 10/17	00:00	      13.225	42.387	+M9	Qh3f5 d5d4 Qf5e4 d4d3 Qe4xd3
 11/17	00:00	      19.722	52.592	+M9	Qh3f5 d5d4 Qf5e4 d4d3 Qe4xd3
 12/20	00:00	      31.196	68.865	+M9	Qh3f5 d5d4 Qf5e4 d4d3 Qe4xd3
 13/20	00:00	      45.429	78.596	+M9	Qh3f5 d5d4 Qf5e4 d4d3 Qe4xd3
 14/24	00:01	      77.842	75.501	+M9	Qh3f5 d5d4 Qf5e4 d4d3 Qe4xd3
 15/26	00:01	     124.517	73.116	+M9	Qh3f5 d5d4 Qf5e4 d4d3 Qe4xd3
 16/28	00:02	     218.817	93.391	+M9	Qh3f5 d5d4 Qf5e4 d4d3 Qe4xd3
 17/27	00:03	     342.438	100.069	+M9	Qh3f5 d5d4 Qf5e4 d4d3 Qe4xd3

best regards,
Christian



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