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Subject: Re: Tough position for solvers

Author: Dann Corbit

Date: 11:28:57 03/15/04

Go up one level in this thread

On March 15, 2004 at 14:20:19, Ralf Schäfer wrote:

>On March 14, 2004 at 20:28:15, Bas Hamstra wrote:
>
>>This copy & paste from Shredder 5 is soooo cool. This is a tough position from
>>BS2830. I am curious how other engines do here. Tao 5.4 used to solve this in 2
>>minutes but the latest version has a hard time here.
>>
>>[D] 2r1r3/p3bk1p/1pnqpppB/3n4/3P2Q1/PB3N2/1P3PPP/3RR1K1 w - -
>>
>>
>>Ciao!
>>
>>Bas.
>
>Hello Bas,
>
>I'm still surprised that my own engine Cheetah finds this move in 7 seconds at
>ply 7 - maybe 7 is its lucky number ;-)
>
>Here is the thinking output:
>
>Cheetah 0.73 WB2 64 MB:
> 1   00:00  0,85   Lb3xd5
> 1   00:00  2,15   Lb3c2
> 2   00:01  0,79   Lb3c2 Te8g8
> 3   00:02  0,83   Lb3c2 Te8g8 Te1e2
> 4   00:02  0,38   Lb3c2 Le7f8 Lh6d2 Lf8g7
> 4   00:02  0,47   Lb3xd5 Dd6xd5 Td1d3 Te8g8
> 4   00:02  0,49   Lb3a4 Le7f8 La4xc6 Tc8xc6
> 4   00:03  0,53   Dg4h4 Kf7g8 Lb3c2 f6f5
> 5   00:03  0,61   Dg4h4 Dd6d7 Lb3xd5 Dd7xd5 Dh4g4
> 6   00:04  0,49   Dg4h4 Dd6d7 Td1c1 Kf7g8 Lh6d2 g6g5
> 7   00:05  0,61   Dg4h4 Kf7g8 Td1c1 f6f5 Sf3g5 Le7xg5 Lh6xg5
> 7   00:07  0,62   Te1xe6 Dd6xe6 Sf3g5+ f6xg5 Dg4f3+ De6f5 Lb3xd5+ Kf7f6 Ld5xc6
>Df5xf3
> 8   00:09  0,74   Te1xe6 Dd6xe6 Td1e1 De6d6 Lh6f4 Sc6e5 d4xe5 Dd6c6
> 9   00:11  1,15   Te1xe6 Dd6xe6 Td1e1 De6d6 Lh6f4 Dd6d8 Dg4e6+ Kf7g7 Lb3xd5
>Sc6a5
>10   00:13  2,01   Te1xe6 Dd6xe6 Td1e1 De6d6 Lh6f4 f6f5 Lf4xd6 f5xg4 Lb3xd5+
>Kf7f8 Te1xe7
>10   00:17  2,01   Te1xe6 Dd6xe6 Td1e1 De6d6 Lh6f4 f6f5 Lf4xd6 f5xg4 Lb3xd5+
>Kf7f8
>11   00:21  0,90   Te1xe6 Dd6xe6 Td1e1 De6d6 Lh6f4 f6f5 Lf4xd6 f5xg4 Lb3xd5+
>Kf7f8 Ld5xc6 Tc8xc6
>11   00:52  0,90   Te1xe6 Dd6xe6 Td1e1 De6d6 Lh6f4 f6f5 Lf4xd6 f5xg4 Lb3xd5+
>Kf7f8
>12   00:54  1,16   Te1xe6 Dd6xe6 Td1e1 De6d6 Lh6f4 f6f5 Lf4xd6 f5xg4 Lb3xd5+
>Kf7f8 Ld5xc6 Tc8xc6
>12   02:56  1,16   Te1xe6 Dd6xe6 Td1e1 De6d6 Lh6f4 f6f5 Lf4xd6 f5xg4 Lb3xd5+
>Kf7f8
>13   03:34  1,59   Te1xe6 Dd6xe6 Td1e1 De6d6 Lh6f4 f6f5 Dg4h3 Dd6xf4 Dh3xh7+
>Kf7f6 Lb3xd5 Sc6d8 b2b4
>13   11:50  1,59   Te1xe6 Dd6xe6 Td1e1 De6d6 Lh6f4 f6f5 Dg4h3 Dd6xf4 Dh3xh7+
>Kf7f6
>14   14:31  1,80   Te1xe6 Dd6xe6 Td1e1 De6d6 Lh6f4 f6f5 Dg4h3 Dd6xf4 Dh3xh7+
>Kf7f6 Lb3xd5 Sc6d8 g2g3
>14   54:43  1,80   Te1xe6 Dd6xe6 Td1e1 De6d6 Lh6f4 f6f5 Dg4h3 Dd6xf4 Dh3xh7+
>Kf7f6
>15   01:05:54  1,60   Te1xe6 Dd6xe6 Td1e1 De6d6 Lh6f4 h7h5 Dg4xc8 Te8xc8 Lf4xd6
>Le7xd6 Lb3xd5+ Kf7g7

Can you dump your evaluation terms to say why your engine picked the move so
quickly?

I am guessing king safety?

• Re: Tough position for solvers Ralf Schäfer 13:24:16 03/15/04
  • Re: Tough position for solvers Uri Blass 13:44:59 03/15/04
    • Re: Tough position for solvers Bas Hamstra 02:08:19 03/16/04

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