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Subject: Re: Shredder 9 cannot find a easy win in the endgame - Test !

Author: Stan Arts

Date: 10:45:57 06/05/05

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That's strange. (but i think it's impressive in how many positions such a
selective
program like Shredder does work well.)

Neurosis's output.: (PIII-550 48MB hash.)

Legal moves: 14   Static score: -91
Ply Score  Time     Nodes      Best move and expected line
------------------------------------------------------------
2   -244   0        131        Kg4 Nxe4
3   -349   0        196        Kg4 Nxe4 b6 Kxd5
3   -243   0        251        Bb2+ Kxe4 Kg4
4   -245   0        480        Bb2+ Kxe4 Kg4 Nf3
5   -254   5        1820       Bb2+ Kxe4 d6 Nf7 Ba3
5   -253   5        4332       b6 < + > Nxe4+ Kh2 Nh6 b7
5   -241   11       7142       b6 Nxe4+ Kg2 Nd6 Bxd6+ Kxd6
6   -227   16       11930      b6 Nxe4+ Kg2 Nd6 Bxd6+ Kxd6 b7 Kc7
7   -227   49       36761      b6 Nxe4+ Kg2 Nd6 Bxd6+ Kxd6 b7 Kc7
7   -226   55       40271      Bb2+ < + > Kxe4 b6 Kf5 b7 Ne4+ Kf3
7   -98    55       41750      Bb2+ < + > Kxe4 b6 Kxd5 b7 Kc6 Kg4
7   -87    71       50541      Bb2+ Kd6 Ba3+ Kc7 Kf4 Nf7 e5 Ng8-h6
8   -87    104      76277      Bb2+ Kd6 Ba3+ Kc7 Kf4 Nf7 Bc5 Nf6 b6+ Kd8
9   -85    219      163506     Bb2+ Kd6 Kf4 Nh3+ Kg3 Ng5 Kf4 Nh3+ Kg3 Ng5
10  -43    543      408440     Bb2+ < + > Kd6 b6 Kc5 Bd4+ Kb5 b7 d6 Kg2 Nf7
10  0      615      466921     Bb2+ Kd6 b6 Nxe4+ Kg2 Ne7 Ba3+ Kxd5 Bxe7 Kc6 Kf3
Kxb6
10  0      796      637463     b6 < + > Nxe4+ Kh4 Ng3 b7 Nf5+ Kg4 Ne3+ Kh4 Ng2+
10  22     867      698010     b6 Nxe4+ Kh4 Nd6 Bxd6+ Kxd6 Kg5 Ne7 b7 Kc7 d6+
Kxb7 dxe7
11  58     1384     1141470    b6 < + > Nf6 Kg2 Ng4 b7 d6 Bxd6+ Kd4 Kh1 Kd3 Kg2
11  138    1746     1438361    b6 < + > Nf6 Kg2 Ng4 b7 Nh3 Kxh3 Nh6 Kg3 Kxe4 Kh3
11  293    2279     1857782    b6 Nxe4+ Kh4 Nd6 Bxd6+ Kxd6 Kg5 Ne7 b7 Nc6 dxc6
Kc7
12  329    3465     2910667    b6 < + > Nh6 Kg2 Ne6 dxe6 Kf6 exd7 Nf7 b7 Nd8 Kf2
Nxb7
12  409    3976     3307353    b6 < + > Nh6 Kg2 Nxe4 b7 Kf6 Kg1 Nd2 b8=Q Nc4 Kf2
Nxa3
12  609    6618     5176837    b6 Nxe4+ Kh4 Nd6 Bxd6+ Kxd6 Kg5 Ne7 b7 Kxd5 b8=Q
Nc6 Qc7
13  611    10243    7933431    b6 Nxe4+ Kh4 Nd6 Bxd6+ Kxd6 Kg5 Ne7 b7 Kxd5 b8=Q
d6 Qb7+ Ke6 Kf4
14  613    18630    14694329   b6 Nxe4+ Kh4 Nd6 Bxd6+ Kxd6 Kg5 Ne7 b7 Kxd5 b8=Q
Ke6 Qb6+ Nc6 Qc7 Nd4
15  612    40804    31479921   b6 Nxe4+ Kh4 Nd6 Bxd6+ Kxd6 Kg5 Ne7 b7 Kxd5 b8=Q
Ke6 Kf4 d5 Nf5
16  615    111257   78155856   b6 Nxe4+ Kh4 Nd6 Bxd6+ Kxd6 Kg5 Ne7 b7 Kxd5 b8=Q
Ke6 Qb6+ d6 Qe3+ Kd7
Total nodes:131294837 n/sec:73100  (q-nodes:7% max depth:34)

Stan



On June 05, 2005 at 12:53:45, Eduard Nemeth wrote:

>[D]6n1/3p4/8/1P1Pk1n1/4P3/B5K1/8/8 w - -
>
>b6! wins easy, but S9 cannot find it!!!



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