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Subject: Is the given solution correct ?

Author: Manfred Rosenboom

Date: 04:02:50 01/03/03

Go up one level in this thread


On January 02, 2003 at 21:41:56, robert flesher wrote:

>Takes most computer a while to see this solution.
>1. h5 gxh5 2. g6 fxg6 3. e6 dxe6 4. c5 dxc5 5. a6 bxa6 6. b6 axb6 1/2-1/2

When I enter 1.h5 gxh5 2.g6, both Shredder 6PB and Yace 0.99.56  will play
2...f5 instead of 2...fxg6 with a pretty good score for black.

Both engine prefer 2.c5 instead of 2.g6 with a draw score.

Shredder Paderborn  UCI 137 MB:
D1-  00:04  2.39   d6xe5 g6xf7 e5e4 f7f8Q
D1  00:04  9.32   d6xe5 g6xf7 e5e4 f7f8Q
D1+  00:04  9.38   f7xg6 e5xd6 e7xd6 Ka4b4
D1+  00:04  10.31   f7xg6 e5xd6 e7xd6 Ka4b4
D1  00:04  12.50   f7xg6 e5xd6 e7xd6 Ka4b4
D2+  00:04  13.56   f7xg6 Ka4b4 d6xe5 b5b6 a7xb6 Kb4a4
D2  00:04  13.56   f7xg6 e5xd6 e7xd6 Ka4b4
D3-  00:04  12.45   f7xg6 e5xd6 e7e5
D3  00:04  12.65   f7xg6 Ka4b4 d6xe5 b5b6 a7xb6 Kb4a4
D4-  00:04  12.32   f7xg6 e5xd6 e7e6 Ka4b4 h5h4 a5a6 b7xa6 Kb4a5
D4  00:04  11.74   f7xg6 e5xd6 e7e5 Ka4b4
D5+  00:04  12.10   f7xg6 c4c5
D5  00:04  12.32   f7xg6 e5xd6 e7e5 Ka4b4 g6g5 Kb4c5 h5h4 Kc5d5
D6  00:04  12.50   f7xg6 e5xd6 e7xd6 Ka4b4 g6g5 Kb4c3
D7  00:04  12.52   f7xg6 e5xd6 e7e5 Ka4b4 g6g5 Kb4c5 h5h4 Kc5d5
D8  00:04  12.69   f7xg6 e5xd6 e7xd6 Ka4b4 g6g5 Kb4c3 h5h4 Kc3d4
D9  00:04  12.79   f7xg6 e5xd6 e7xd6 Ka4b4 g6g5 Kb4c3 h5h4 Kc3d4 h4h3
D10-  00:04  12.53   f7xg6 e5e6 d7xe6 c4c5 e6e5 c5c6 b7b6
D10-  00:04  12.03   f7xg6 e5e6 d7xe6 c4c5 e6e5 c5c6 b7b6 a5xb6 a7a6 b5xa6
D10  00:04  5.01   f7xg6 e5e6 d7xe6 c4c5 Ka2b2 c5c6 d6d5 c6xb7 a7a6 b7b8Q a6xb5
Ka4xb5
D10+  00:04  5.02   f7f6 c4c5 f6xe5 b5b6 a7xb6 c5c6 b7xc6 a5xb6
D10+  00:04  5.37   f7f6 b5b6 a7xb6 Ka4b4
D10  00:04  5.37   f7f6 c4c5 h5h4 c5xd6 f6xe5 d6xe7 Ka2b2 e7e8Q Kb2b1
D11-  00:05  5.12   f7f6 c4c5 h5h4 c5xd6 e7e6 e5xf6 h4h3 f6xg7 h3h2 g7g8Q h2h1R
g6g7
D11-  00:05  4.62   f7f6 c4c5 h5h4 c5xd6 e7e6 e5xf6 h4h3 f6xg7 h3h2 g7g8Q h2h1R
g6g7
D11  00:05  0.00   f7f6 c4c5 d6xc5 e5xf6 e7xf6 a5a6 b7xa6 b5b6 a7xb6
D11+  00:05  0.01   f7xg6 e5e6 d7xe6 c4c5
D11+  00:05  0.36   f7xg6 e5e6 d7xe6 c4c5 h5h4 c5xd6 e7xd6 Ka4b4 g6g5 a5a6 b7xa6
D11  00:05  3.64   f7xg6 e5e6 d7xe6 c4c5 e6e5 c5c6 a7a6 c6xb7 a6xb5 Ka4xb5 e7e6
b7b8Q
D12  00:05  3.63   f7xg6 e5e6 d7xe6 c4c5 h5h4 c5c6 b7xc6 b5xc6 h4h3 c6c7 h3h2
c7c8Q h2h1Q Qc8xe6 d6d5 Qe6xg6
D13  00:05  3.63   f7xg6 e5e6 d7xe6 c4c5 h5h4 c5c6 b7xc6 b5xc6 h4h3 c6c7 h3h2
c7c8Q h2h1Q Qc8xe6 d6d5 Qe6xg6
D14  00:06  3.63   f7xg6 e5e6 d7xe6 c4c5 h5h4 c5c6 b7xc6 b5xc6 h4h3 c6c7 h3h2
c7c8Q h2h1Q Qc8xe6 d6d5 Qe6xg6
D15-  00:07  3.38   f7xg6 e5e6 d7xe6 c4c5 h5h4 c5c6 b7xc6 b5xc6 h4h3 c6c7 h3h2
c7c8Q h2h1Q Qc8xe6 d6d5 Qe6xe7 Qh1e4 Qe7xe4
D15  00:07  3.24   f7xg6 e5e6 d7xe6 c4c5 h5h4 c5c6 b7xc6 b5xc6 h4h3 c6c7 h3h2
c7c8Q h2h1Q Qc8xe6 d6d5 Qe6e2 Ka2a1 Qe2e5 Ka1b1 Qe5b8 Kb1c2 Qb8xa7
D15  00:08  3.51   f7f5 c4c5
D16  00:08  3.51   f7f5 c4c5
D17  01:01  3.64   f7f5 e5e6 d7xe6
D18  01:34  3.52   f7f5 c4c5 f5f4 e5xd6 e7xd6 a5a6 b7xa6 b5b6 a7xb6 c5xb6 f4f3
b6b7 f3f2 b7b8Q f2f1Q Qb8g8 Ka2b1 Qg8b3 Kb1c1
D19  06:06  3.52   f7f5 c4c5 f5f4 e5xd6 e7xd6 a5a6 b7xa6 b5b6 a7xb6 c5xb6 f4f3
b6b7 f3f2 b7b8Q f2f1Q Qb8g8 Ka2b1 Qg8b3 Kb1c1


Yace 0.99.56  UCI 131 MB:

Position stored with depth 6
D1  00:00  5.89   f7xg6
D2+  00:00  6.45   f7xg6 c4c5
D2  00:00  6.49   f7xg6 a5a6 b7xa6
D3  00:00  6.49   f7xg6 a5a6 b7xa6
D4+  00:00  6.91   f7xg6 a5a6 b7xa6 b5xa6
D4-  00:00  6.03   f7xg6 e5xd6 g6g5 a5a6 g7g6
D4  00:00  5.70   f7xg6 e5xd6 e7e5 Ka4b4 h5h4
D5+  00:00  6.10   f7xg6 e5e6 d7xe6 b5b6 a7xb6 Ka4b5 g6g5 Kb5xb6 d6d5 Kb6c5 h5h4
c4xd5
D5+  00:00  7.11   f7xg6 e5xd6 e7xd6 c4c5 a7a6 b5b6 h5h4 Ka4b4 d6xc5 Kb4c4 h4h3
Kc4xc5
D5  00:00  7.11   f7xg6 e5xd6 e7xd6 c4c5 a7a6 Ka4b4 d6d5 b5b6 d5d4 Kb4a4 g6g5
D6  00:00  6.89   f7xg6 e5e6 d7xe6 c4c5 g6g5 c5c6 b7xc6 b5xc6
D7+  00:00  7.29   f7xg6 a5a6 b7xa6 Ka4b4 d6xe5 c4c5 g6g5 Kb4a4 d7d6 c5c6 h5h4
D7  00:01  7.39   f7xg6 e5e6 d7xe6 c4c5 h5h4 a5a6 b7xa6 c5c6 a6xb5 Ka4xb5
D8-  00:01  6.94   f7xg6 e5e6 d7xe6 c4c5 h5h4 b5b6 h4h3 c5c6 b7xc6 b6xa7 c6c5
D8-  00:01  5.94   f7xg6 e5e6 d6d5 c4c5 b7b6 a5xb6 Ka2a1 c5c6 a7xb6
D8  00:02  2.67   f7xg6 e5e6 d7xe6 c4c5 h5h4 c5c6 b7xc6 b5xc6 h4h3 c6c7 h3h2
c7c8Q h2h1Q Qc8xe6 d6d5 Qe6xe7
D9  00:04  2.67   f7xg6 e5e6 d7xe6 c4c5 h5h4 c5c6 b7xc6 b5xc6 h4h3 c6c7 h3h2
c7c8Q h2h1Q Qc8xe6 d6d5 Qe6xe7
D10  00:04  2.70   f7xg6 e5e6 d7xe6 c4c5 h5h4 c5c6 b7xc6 b5xc6 h4h3 c6c7 h3h2
c7c8Q h2h1Q Qc8xe6 d6d5 Qe6e2 Ka2b1
D10+  00:07  2.71   f7f5 e5e6 d7xe6 c4c5 f5f4 c5c6 b7xc6 b5xc6 f4f3 c6c7 f3f2
c7c8Q f2f1Q Ka4b4 Ka2b2 Kb4a4
D10-  00:08  2.70   f7f5 c4c5 f5f4 e5xd6 e7e6 b5b6 a7xb6 a5a6 b7xa6 c5c6 f4f3
c6xd7 f3f2 d7d8Q f2f1Q Qd8xb6 Qf1e1
D10  00:08  2.70   f7xg6 e5e6 d7xe6 c4c5 h5h4 c5c6 b7xc6 b5xc6 h4h3 c6c7 h3h2
c7c8Q h2h1Q Qc8xe6 d6d5 Qe6e2 Ka2b1
D11  00:14  2.70   f7xg6 e5e6 d7xe6 c4c5 h5h4 c5c6 b7xc6 b5xc6 h4h3 c6c7 h3h2
c7c8Q h2h1Q Qc8xe6 d6d5 Qe6e2 Ka2b1 Qe2xe7
D12-  00:18  2.30   f7xg6 c4c5 h5h4 e5xd6 e7xd6 a5a6 b7xa6 b5b6 a7xb6 c5xb6 h4h3
b6b7 h3h2 b7b8Q d6d5 Qb8b3 Ka2a1 Qb3xd5 h2h1R
D12  00:20  2.05   f7xg6 c4c5 h5h4 e5xd6 e7e6 c5c6 h4h3 c6c7 h3h2 c7c8Q h2h1Q
Qc8c2 Ka2a1 Qc2c3 Ka1b1 Qc3d4 a7a6
D12+  00:23  2.06   f7f5 c4c5 f5f4 e5xd6 e7xd6 a5a6 b7xa6 b5b6 a7xb6 c5xb6 f4f3
b6b7 f3f2 b7b8Q f2f1Q Qb8g8 Ka2b1 Qg8h7
D12  00:41  2.33   f7f5 c4c5 f5f4 e5e6 d7xe6 c5c6 b7xc6 b5xc6 f4f3 c6c7 f3f2
c7c8Q f2f1Q Qc8xe6 Ka2a1 Qe6xe7 Qf1c4 Ka4a3 Qc4d4
D13  01:19  2.24   f7f5 c4c5 f5f4 e5e6 d7xe6 c5c6 b7xc6 b5xc6 f4f3 c6c7 f3f2
c7c8Q f2f1Q Qc8xe6 Ka2a1 Qe6xe7 Qf1c4 Ka4a3 Qc4c3 Ka3a4
D14  01:36  2.23   f7f5 c4c5 f5f4 e5e6 d7xe6 c5c6 b7xc6 b5xc6 f4f3 c6c7 f3f2
c7c8Q f2f1Q Qc8xe6 Ka2a1 Qe6xe7 Qf1c4 Ka4a3 Qc4c3 Ka3a4 Qc3c6 Ka4b4




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