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Subject: Re: how long to see this winning line ...BUT! Is it?

Author: Uri Blass

Date: 06:34:27 11/28/04

Go up one level in this thread


On November 28, 2004 at 09:28:07, chandler yergin wrote:

>On November 28, 2004 at 09:23:58, Uri Blass wrote:
>
>>On November 28, 2004 at 08:26:20, chandler yergin wrote:
>>
>>>On November 27, 2004 at 17:27:07, Mike Byrne wrote:
>>>
>>>>Black(1): [d]8/2B2pPb/7k/4K3/3p2P1/8/8/8/ w
>>>>bm g8=N+!!
>>>
>>>
>>>After g8=N+... Now start the Search!
>>>
>>>[D] 6N1/2B2p1b/7k/4K3/3p2P1/8/8/8 b - - 0 1
>>>
>>>Analysis by Shredder 8:
>>>
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 16/16   00:00:00
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 16/16   00:00:00
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 16/16   00:00:00
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 16/16   00:00:00
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 16/16   00:00:00
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 16/16   00:00:00
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 16/16   00:00:00
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 16/16   00:00:00
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 16/16   00:00:00
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 16/16   00:00:00
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 16/16   00:00:00
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 16/16   00:00:00
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 16/16   00:00:00
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 16/16   00:00:00
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 16/16   00:00:00
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 16/16   00:00:00
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 16/16   00:00:00  37kN, tb=852
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 17/18   00:00:01  101kN, tb=1628
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 18/19   00:00:02  149kN, tb=2171
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 19/20   00:00:02  229kN, tb=3209
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 20/24   00:00:04  361kN, tb=4710
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 21/21   00:00:06  507kN, tb=6553
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 22/22   00:00:08  721kN, tb=9528
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 23/23   00:00:11  1013kN, tb=13251
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 24/24   00:00:15  1423kN, tb=17747
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 25/25   00:00:21  2022kN, tb=24473
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 26/26   00:00:30  2956kN, tb=35460
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 27/27   00:00:41  4274kN, tb=50495
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 28/28   00:00:57  6084kN, tb=69291
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 29/29   00:01:25  8836kN, tb=97561
>>>1...Bxg8 2.Kxd4 Kg5 3.Ba5 Kxg4
>>>  =  (-0.01)   Depth: 30/36   00:03:01  12567kN, tb=132919
>>>
>>>(Yergin, MyTown 28.11.2004)
>>
>>Why do you use shredder8?
>>
>>Movei has no problem to see mate for white after the move suggested by
>>shredder(1...Bxg8)
>>
>>depth=16 +99.81 e5f6 h6h7 c7f4 h7h8 f4e5 d4d3 g4g5 h8h7 e5c3 d3d2 c3d2 h7h8 d2c3
>>h8h7 c3d4 h7h8 g5g6 f7g6 f6g6
>>Nodes: 9914901 NPS: 694320
>>Time: 00:00:14.28
>
>"Clip your analysis, Paste it  and show me!
>
>If Shredder at Depth of 30/36 can't find the win, it's not there!
>CY

Here is analysis by yace
It seems that it has some bug because it see mate score and lose it only to find
it again and mate score should never get lost.

Uri
,
6b1/2B2p2/7k/4K3/3p2P1/8/8/8 w - - 0 1

Analysis by Yace 0.99.87:

2.Kxd4
  ²  (0.31)   Depth: 1   00:00:00
2.Kxd4 Kg5 3.Bd6
  ³  (-0.68)   Depth: 1   00:00:00
2.Kxd4 Kg5 3.Bd6
  ³  (-0.68)   Depth: 3   00:00:00
2.Kxd4 Kg5 3.Bd6
  ³  (-0.68)   Depth: 3   00:00:00
2.Kxd4 Kg5 3.Bd6
  ³  (-0.68)   Depth: 3   00:00:00
2.Kxd4 Kg5 3.Bd6
  ³  (-0.68)   Depth: 3   00:00:00
2.Kxd4 Kg5 3.Bd6
  ³  (-0.68)   Depth: 3   00:00:00
2.Kxd4 Kg5 3.Bd6 Kxg4
  ³  (-0.68)   Depth: 4   00:00:00
2.Kxd4 Kg5 3.Bd6 Kxg4
  ³  (-0.68)   Depth: 4   00:00:00
2.Kxd4 Kg5 3.Bd8+ Kxg4 4.Bf6
  ³  (-0.62)   Depth: 5   00:00:00
2.Kxd4 Kg5 3.Bd8+ Kxg4 4.Bf6
  ³  (-0.62)   Depth: 5   00:00:00
2.Kxd4 Kg5 3.Bd8+ Kxg4 4.Bf6 Bh7
  ³  (-0.67)   Depth: 6/9   00:00:00  3kN
2.Kxd4 Kg5 3.Bd8+ Kxg4 4.Bf6 Bh7
  ³  (-0.67)   Depth: 6/9   00:00:00  6kN
2.Kxd4 Kg5 3.Bd8+ Kxg4 4.Bf6 Kf5 5.Be5
  µ  (-0.74)   Depth: 7/9   00:00:00  8kN
2.Kxd4 Kg5 3.Bd8+ Kxg4 4.Bf6 Kf5 5.Be5
  µ  (-0.74)   Depth: 7/10   00:00:00  16kN
2.Kxd4 Kg5 3.Bd8+ Kxg4 4.Bf6 Kf5 5.Be5 Bh7 6.Kd5
  µ  (-0.74)   Depth: 8/10   00:00:00  21kN
2.Kf6 d3 3.Bf4+ Kh7 4.g5 d2 5.Bxd2 Kh8
  µ  (-0.72)   Depth: 8/10   00:00:00  46kN
2.Kf6 d3 3.Bf4+ Kh7 4.g5 Kh8 5.Bd2
  µ  (-0.72)   Depth: 8/10   00:00:00  49kN
2.Kf6 d3 3.Bf4+ Kh7 4.g5 Kh8 5.Bd2
  µ  (-0.72)   Depth: 8/14   00:00:01  50kN
2.Kf6 d3 3.Bf4+ Kh7 4.g5 Kh8 5.Bd2 Kh7 6.Bf4
  =  (0.00)   Depth: 9/14   00:00:01  51kN
2.Kf6 d3 3.Bf4+ Kh7 4.Bd2 Kh8 5.Bf4
  =  (0.00)   Depth: 9/14   00:00:01  61kN
2.Kf6 d3 3.Bf4+ Kh7 4.Bd2 Kh8 5.Bf4
  =  (0.00)   Depth: 9/15   00:00:01  95kN
2.Kf6 d3 3.Bf4+ Kh7 4.Bd2 Kh8 5.Bc3 Kh7 6.Bd2 Kh8 7.Bc3 Kh7 8.Bd2
  =  (0.00)   Depth: 10/15   00:00:01  125kN
2.Kf6 d3 3.Bf4+ Kh7 4.Bd2 Kh8 5.Bc3 Kh7 6.Bd2 Kh8 7.Bc3 Kh7 8.Bd2
  =  (0.00)   Depth: 10/17   00:00:01  196kN
2.Kf6 d3 3.Bf4+ Kh7 4.Bd2 Kh8 5.Bc3 Kh7 6.Bd2
  =  (0.00)   Depth: 11/17   00:00:01  243kN
2.Kf6 d3 3.Bf4+ Kh7 4.Bd2 Kh8 5.Bc3 Kh7 6.Bd2
  =  (0.00)   Depth: 11/18   00:00:01  371kN
2.Kf6 d3 3.Bf4+ Kh7 4.Bd2 Kh8 5.Bc3 Kh7 6.g5 d2 7.Bxd2 Kh8 8.Bf4 Kh7 9.Bd6
  ²  (0.37)   Depth: 12/18   00:00:02  460kN
2.Kf6 d3 3.Bf4+ Kh7 4.Bd2 Kh8 5.Bc3 Kh7 6.g5 d2 7.Bxd2 Kh8 8.Bf4 Kh7 9.Bd6
  ²  (0.37)   Depth: 12/20   00:00:02  643kN
2.Kf6 d3 3.Bf4+ Kh7 4.Bd2 Kh8 5.Bc3 Kh7 6.g5 d2 7.Bxd2 Kh8 8.Bf4 Kh7 9.Bd6 Kh8
  ²  (0.39)   Depth: 13/20   00:00:02  782kN
2.Kf6 d3 3.Bf4+ Kh7 4.Bd2 Kh8 5.Bc3 Kh7 6.g5 d2 7.Bxd2 Kh8 8.Bf4 Kh7 9.Bd6 Kh8
  ²  (0.39)   Depth: 13/20   00:00:02  1130kN
2.Kf6 d3 3.Bf4+ Kh7 4.Bd2 Kh8 5.Bc3 d2 6.Bxd2 Bh7 7.Kxf7 Bd3
  ±  (1.04)   Depth: 14/20   00:00:02  1139kN
2.Kf6 d3 3.Bf4+ Kh7 4.g5 Kh8 5.Be5 Kh7 6.Bc3 d2 7.Bxd2 Kh8 8.Bf4 Bh7 9.Kxf7 Be4
10.Bd6
  ±  (1.20)   Depth: 14/20   00:00:02  1461kN
2.Kf6 d3 3.Bf4+ Kh7 4.g5 Kh8 5.Be5 Kh7 6.Bc3 d2 7.Bxd2 Kh8 8.Bf4 Bh7 9.Kxf7 Be4
10.Bd6
  ±  (1.20)   Depth: 14/24   00:00:02  2066kN
2.Kf6 d3 3.Bf4+ Kh7 4.g5 Kh8 5.Be5 Kh7 6.Bc3 d2 7.Bxd2 Kh8 8.Bc3 Kh7 9.Bd4 Kh8
10.g6 Bh7 11.gxf7 Be4
  +-  (1.46)   Depth: 15/24   00:00:03  2478kN
2.Kf6 d3 3.Bf4+ Kh7 4.g5 Kh8 5.Be5 Kh7 6.Bc3 d2 7.Bxd2 Kh8 8.Bc3 Kh7 9.Bd4 Kh8
10.g6 Bh7 11.gxf7 Be4
  +-  (1.46)   Depth: 15/26   00:00:03  3512kN
2.Kf6 Kh7 3.g5 Kh8 4.Be5 d3
  +-  (1.86)   Depth: 16/26   00:00:03  3524kN
2.Kf6 Kh7 3.g5 Kh8 4.Be5 d3
  +-  (2.86)   Depth: 16/26   00:00:03  3524kN
2.Kf6 Kh7 3.g5 Kh8 4.Be5 d3
  +-  (7.86)   Depth: 16/26   00:00:03  3524kN
2.Kf6 Kh7 3.g5 d3 4.Bf4 Kh8 5.Be5 Kh7 6.Bc3 d2 7.Bxd2 Kh8 8.Bc3 Kh7 9.Bd4 Kh8
10.g6 fxg6 11.Kxg6#
  +-  (#10)   Depth: 16/26   00:00:03  3771kN
2.Kf6 Kh7 3.g5 d3 4.Bf4 Kh8 5.Be5 Kh7 6.Bc3 d2 7.Bxd2 Kh8 8.Bc3 Kh7 9.Bd4 Kh8
10.g6 fxg6 11.Kxg6#
  +-  (#10)   Depth: 16/26   00:00:04  6018kN
2.Kf6 Kh7 3.Bb6 d3 4.g5 Kh8 5.Kf5 Bh7+ 6.g6
  +-  (18.21)   Depth: 17/27   00:00:04  7066kN
2.Kf6 Kh7 3.Bf4 Kh8 4.Be5 d3 5.g5 Kh7 6.Bc3 d2 7.Bxd2 Kh8 8.Bc3 Kh7 9.Be5 Kh8
10.g6 fxg6 11.Kxg6#
  +-  (18.21)   Depth: 17/27   00:00:04  7730kN
2.Kf6 Kh7 3.Bf4 Kh8 4.Be5 d3 5.g5 Kh7 6.Bc3 d2 7.Bxd2 Kh8 8.Bc3 Kh7 9.Be5 Kh8
10.g6 fxg6 11.Kxg6#
  +-  (18.21)   Depth: 17/33   00:00:05  13095kN
2.Kf6 Kh7 3.Bf4 Kh8 4.Be5 d3 5.g5 Kh7 6.Bc3 d2 7.Bxd2 Kh8 8.Bc3 Kh7 9.Be5 Kh8
10.g6 fxg6 11.Kxg6#
  +-  (#10)   Depth: 18/33   00:00:06  13095kN
2.Kf6 Kh7 3.Bf4 Kh8 4.Be5 d3 5.g5 Kh7 6.Bc3 d2 7.Bxd2 Kh8 8.Bc3 Kh7 9.Be5 Kh8
10.g6 fxg6 11.Kxg6#
  +-  (#10)   Depth: 18/33   00:00:06  13701kN
2.Kf6 Kh7 3.Bf4 Kh8 4.Be5 d3 5.g5 Kh7 6.Bc3 d2 7.Bxd2 Kh8 8.Bc3 Kh7 9.Be5 Kh8
10.g6 fxg6 11.Kxg6#
  +-  (#10)   Depth: 18/33   00:00:08  19152kN
2.Kf6 Kh7 3.Bf4 Kh8 4.Be5 d3 5.g5 Kh7 6.Bc3 d2 7.Bxd2 Kh8 8.Bc3
  +-  (#11)   Depth: 19/33   00:00:09  20874kN
2.Kf6 Kh7 3.Bf4 Kh8 4.Be5 d3 5.g5 Kh7 6.Bc3 d2 7.Bxd2 Kh8 8.Bc3
  +-  (#11)   Depth: 19/33   00:00:14  32149kN
2.Kf6 Kh7 3.Bf4 Kh8 4.Be5 d3 5.g5 Kh7 6.Bc3 d2 7.Bxd2 Kh8 8.Bc3 Kh7 9.Be1 Kh8
10.Bc3 Kh7 11.Be1 Kh8 12.Bc3
  +-  (#10)   Depth: 20/33   00:00:14  33558kN

(, MyTown 28.11.2004)

Uri



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