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Subject: Re: Find a mate.

Author: leonid

Date: 08:42:03 08/03/02

Go up one level in this thread


On August 03, 2002 at 10:42:17, Manfred Rosenboom wrote:

>On August 03, 2002 at 08:03:46, leonid wrote:
>
>>...
>>If above position is too easy for You then try other one. In it my program was
>>very slow and I don't know shortest mate. By selective mate was found in 10.
>
>
>>[D]2bqkb2/1r4rR/nPPPPPPn/1pNppNp1/bNp2pNb/8/8/7K w - -
>
>Yace 0.99.56 indicates at least mate in 9:
>
>D1  00:00  -16.22   Rh7xg7 Rb7xg7 f6xg7
>D1+  00:00  -16.15   Nf5xg7 Bf8xg7 c6xb7 Bc8xe6 b7b8Q Na6xb8 f6xg7
>D1  00:00  -14.62   Nf5xg7 Bf8xg7 c6xb7
>D1+  00:00  -14.59   d6d7 Rb7xd7 e6xd7 Rg7xd7 c6xd7 Bc8xd7
>D1  00:00  -11.04   d6d7 Rb7xd7 e6xd7 Rg7xd7 c6xd7 Bc8xd7 Rh7xd7
>D2+  00:00  -10.63   d6d7 Rb7xd7 c6xd7 Bc8xd7 f6xg7 Qd8b8 g7xf8Q Ke8xf8 e6xd7
>Na6xc5 d7d8Q Qb8xd8 Ng4xh6 Qd8xb6
>D2+  00:00  -9.62   d6d7 Qd8xd7 e6xd7 Bc8xd7 f6xg7 Bd7e6
>D2  00:00  -9.11   d6d7 Rb7xd7 c6xd7 Bc8xd7 f6f7 Nh6xf7 e6xd7 Qd8xd7 Nc5xd7
>Rg7xh7
>D3+  00:00  -8.68   d6d7 Qd8xd7 e6xd7 Bc8xd7 Nf5xg7 Ke8d8
>D3  00:00  -7.88   d6d7 Rg7xd7 e6xd7 Rb7xd7 c6xd7 Qd8xd7 f6f7 Ke8d8
>D3+  00:00  -7.87   Nf5xg7 Rb7xg7 d6d7 Qd8xd7 c6xd7 Ke8d8 d7xc8Q Kd8xc8 f6xg7
>Na6xb4
>D3+  00:00  -7.68   Nf5xg7 Bf8xg7 d6d7 Bc8xd7 e6xd7 Ke8f8 Nc5e6 Kf8g8 Ne6xd8
>Rb7xb6 f6xg7 Nh6xg4 Nb4xd5
>D3  00:00  -5.75   Nf5xg7 Bf8xg7 d6d7 Bc8xd7 e6xd7 Rb7xd7 c6xd7 Qd8xd7
>D4  00:00  -5.75   Nf5xg7 Bf8xg7 d6d7 Bc8xd7 e6xd7 Rb7xd7 c6xd7 Qd8xd7 Nc5xd7
>Nh6xg4 Nb4xa6
>D4+  00:00  -5.74   d6d7 Rb7xd7 c6xd7 Qd8xd7 e6xd7 Ke8d8 d7xc8Q Kd8xc8 f6xg7
>Bf8xg7
>D4+  00:00  -5.35   d6d7 Rb7xd7 c6xd7 Qd8xd7 e6xd7 Ke8d8 d7xc8Q Kd8xc8 f6xg7
>Bf8xg7
>D4  00:00  -5.04   d6d7 Rb7xd7 c6xd7 Qd8xd7 e6xd7 Rg7xd7 f6f7 Rd7xf7 g6xf7
>Nh6xf7 Ng4f6 Ke8d8
>D4+  00:00  -5.02   f6f7 Nh6xf7 d6d7 Rb7xd7 c6xd7 Qd8xd7 e6xd7 Bc8xd7 Nf5xg7
>Bf8xg7 g6xf7 Ke8d8 f7f8Q Bg7xf8 Nc5xa4
>D4  00:00  -4.56   f6f7 Rg7xf7 g6xf7 Nh6xf7 c6c7 Rb7xc7 b6xc7 Qd8xc7 d6xc7
>Na6xc7 e6xf7 Ke8d8
>D5  00:01  -4.27   f6f7 Rg7xf7 g6xf7 Nh6xf7 c6xb7 Bc8xe6 Nc5xe6 Nf7xd6 Ne6xd8
>Nd6xf5
>D5+  00:01  -4.26   d6d7 Rb7xd7 c6xd7 Qd8xd7 e6xd7 Bc8xd7 f6xg7 Bf8xg7 Nf5xg7
>Ke8f8
>D5+  00:01  -4.16   d6d7 Rb7xd7 c6xd7 Qd8xd7 e6xd7 Bc8xd7 f6xg7 Bf8xg7 Nf5xg7
>Ke8f8
>D5+  00:01  -3.16   d6d7 Rb7xd7 c6xd7 Qd8xd7 e6xd7 Bc8xd7 f6xg7 Ke8d8 g7xf8Q
>Bd7e8
>D5  00:01  -2.15   d6d7 Rb7xd7 c6xd7 Qd8xd7 e6xd7 Bc8xd7 f6xg7 Bf8xg7 Nf5xg7
>Ke8d8 Rh7h8 Kd8e7 Nb4xd5 Ke7d6
>D5+  00:02  -2.14   Nc5xb7 Bc8xe6 f6xg7 Qd8xd6 Nf5xd6 Bf8xd6 g7g8Q Bd6f8
>D5  00:02  -1.06   Nc5xb7 Bc8xe6 f6xg7 Nh6g8 d6d7 Qd8xd7 c6xd7 Be6xd7 g7xf8Q
>Ke8xf8 Rh7xd7 Na6xb4 Nf5xh4 g5xh4 Ng4xe5
>D6+  00:03  -0.66   Nc5xb7 Bc8xe6 f6xg7 Nh6g8 d6d7 Qd8xd7 c6xd7 Ke8xd7 g7xf8Q
>Be6f7
>D6+  00:03  0.34   Nc5xb7 Bc8xe6 f6xg7 Nh6g8 d6d7 Qd8xd7 c6xd7 Ke8xd7 g7xf8Q
>Be6f7
>D6  00:04  2.80   Nc5xb7 Bc8xe6 f6xg7 Nh6xf5 d6d7 Be6xd7 Ng4f6 Qd8xf6 c6xd7
>Ke8xd7 g7xf8Q Nf5g7 Qf8xf6 Na6xb4 Qf6xg7 Kd7e6
>D6+  00:04  2.81   d6d7 Rb7xd7 c6xd7 Qd8xd7 e6xd7 Bc8xd7 f6xg7 Bd7xf5 Ng4f6
>Ke8e7 g7g8Q Nh6f7 Nc5xa4 Ke7xf6 Rh7xh4
>D6+  00:05  5.34   d6d7 Rb7xd7 c6xd7 Qd8xd7 e6xd7 Bc8xd7 f6xg7 Bf8e7 Ng4f6 Ke8d8
>Rh7h8 Be7f8 g7xf8Q Bd7e8
>D6  00:13  M9  d6d7 Rb7xd7 c6xd7 Qd8xd7 e6xd7 Bc8xd7 f6xg7 Bf8xg7 Nf5xg7 Ke8d8
>Ng7e6 Bd7xe6 Nb4c6 Kd8e8 Ng4f6 Ke8f8
>D7  00:57  M9  d6d7 Rb7xd7 c6xd7 Qd8xd7 e6xd7 Bc8xd7 f6xg7 Bf8xg7 Nf5xg7 Ke8d8
>Ng7e6 Bd7xe6 Nb4c6 Kd8e8 Ng4f6 Ke8f8 Nc5xe6
>D8  01:17  M9  d6d7 Rb7xd7 c6xd7 Qd8xd7 e6xd7 Bc8xd7 f6xg7 Bf8xg7 Nf5xg7 Ke8d8
>Ng7e6 Bd7xe6 Nb4c6 Kd8e8 Ng4f6 Ke8f8 Nc5xe6

Much better in time and shorter that my solution. Mine found mate in 10 only in
3 min and 31 sec. Celeron 600Mhz. No hash.

Cheers,
Leonid.



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