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Subject: Re: Perpetual Check

Author: David Dahlem

Date: 12:07:14 09/04/04

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On September 04, 2004 at 11:46:48, Ed Schröder wrote:

>Does someone possess a good test set for testing Perpetual Checks ?
>
>Thanks.
>
>Ed

[D]8/p2PB1pk/1p5p/4q3/2pQ2K1/2Pn1P2/6PP/8 b - - 0 1

Shredder 8 doesn't see this perpetual, but ProDeo does.

Shredder 8  UCI1:
 1   00:00  0.80   1. ... Qxd4+ 2.cxd4
 1-  00:00  0.03   1. ... h5+ 2.Kh3 Qxd4 3.d8Q
 1   00:00 -0.60   1. ... h5+ 2.Kh3 Qxd4 3.cxd4
 2+  00:00 -0.29   1. ... h5+ 2.Kh3 Nf4+ 3.Kg3 Qxe7 4.Qxf4 Qxd7 5.Qxc4
 2   00:00 -0.60   1. ... h5+ 2.Kh3 Qxd4 3.cxd4
 3+  00:00 -0.35   1. ... h5+ 2.Kh3 Qg3+ 3.Kxg3 h4+ 4.Bxh4
 3+  00:00  0.15   1. ... h5+ 2.Kh3 Qg3+ 3.Kxg3 h4+ 4.Bxh4
 3   00:00  0.72   1. ... h5+ 2.Kh3 Nf2+ 3.Qxf2 Qxe7
 4+  00:00  0.97   1. ... h5+ 2.Kh3 Nf2+ 3.Qxf2 Qxh2+ 4.Kxh2
 4   00:00  1.11   1. ... h5+ 2.Kh3 Nf2+ 3.Qxf2 Qe6+ 4.Kg3 Qxe7
 4-  00:00  1.10   1. ... Qe6+ 2.Kh4 Qxe7+ 3.Kg3 Qd8 4.Qxd3+ cxd3
 4-  00:00  0.75   1. ... Qe6+ 2.Kh4 Qxe7+ 3.Kg3 Qd8 4.Qxg7+ Kxg7
 4   00:00  0.57   1. ... Qe6+ 2.Kg3 Qe1+ 3.Kh3 Nf2+ 4.Qxf2 Qxe7
 5   00:00  0.57   1. ... Qe6+ 2.Kg3 Qe1+ 3.Kh3 Nf2+ 4.Qxf2 Qxe7
 6-  00:00  0.32   1. ... Qe6+ 2.Kg3 Qe1+ 3.Kh3 Qxe7 4.Kg3 Qg5+ 5.Qg4 Qe7
6.Qxg7+ Kxg7
 6   00:00  0.03   1. ... Qe6+ 2.Kg3 Qe1+ 3.Kh3 Qxe7 4.d8R Qe6+ 5.Kg3 a5
 7+  00:00  0.28   1. ... Qe6+ 2.Kg3 Qe1+ 3.Kh3 Qxe7 4.d8Q Qe6+ 5.g4 Qxg4+
6.fxg4
 7+  00:00  0.78   1. ... Qe6+ 2.Kg3 Qe1+ 3.Kh3 Qxe7 4.d8Q Qe6+ 5.g4 Qxg4+
6.fxg4
 7   00:00  2.08   1. ... Qe6+ 2.Kg3 Qe1+ 3.Kh3 Nf2+ 4.Qxf2 Qxf2 5.d8Q a5
 7-  00:00  2.07   1. ... h5+ 2.Kh3 Nf2+ 3.Qxf2 Qe6+ 4.Kg3 Qxe7 5.Qd2 Qd8 6.Qh6+
gxh6
 7-  00:00  1.72   1. ... h5+ 2.Kh3 Nf2+ 3.Qxf2 Qxe7 4.Qc2+ Kg8 5.Qd2 Qd8 6.Qg5
Qxg5
 7   00:00  1.72   1. ... h5+ 2.Kh3 Nf2+ 3.Qxf2 g6 4.d8Q Qxh2+ 5.Kxh2
 7-  00:00  1.71   1. ... Nf2+ 2.Qxf2 Qxe7 3.Qd2 Qd8 4.Qd5
 7-  00:00  1.36   1. ... Nf2+ 2.Qxf2 Qxe7 3.Qd2 Qd8 4.Qd5 a5 5.Qa8 Qxa8
 7   00:00  1.10   1. ... Nf2+ 2.Qxf2 Qxe7 3.Qd2 Qd8 4.Kf5 a5 5.Ke4
 8   00:00  1.16   1. ... Nf2+ 2.Qxf2 Qxe7 3.Qd2 Qd8 4.Qd5 a5 5.Qe4+ Kg8 6.Qxc4+
Kf8
 8-  00:00  1.15   1. ... Qe6+ 2.Kg3 Qe1+ 3.Kh3 Nf2+ 4.Qxf2 Qxe7 5.Qc2+ Kg8
6.d8Q+ Qxd8 7.Qh7+ Kxh7
 8   00:00  1.15   1. ... Qe6+ 2.Kg3 Qe1+ 3.Kh3 Nf2+ 4.Qxf2 Qxe7 5.Qd4 Qd8 6.Kg4
a5 7.Qf6 gxf6
 9+  00:01  1.40   1. ... Qe6+ 2.Kg3 Qe1+ 3.Kh3 Nf2+ 4.Qxf2 Qxf2 5.d8Q Qe3 6.Kg3
Qf2+ 7.Kxf2
 9   00:01  1.57   1. ... Qe6+ 2.Kg3 Qe1+ 3.Kh3 Nf2+ 4.Qxf2 Qe6+ 5.Kg3 Qxd7
6.Bh4 Qc7+ 7.Kh3 Qe7 8.Bxe7
 9-  00:01  1.56   1. ... Nf2+ 2.Qxf2 Qxe7 3.Qd2 Qd8 4.Qd5
 9-  00:01  1.21   1. ... Nf2+ 2.Qxf2 Qxe7 3.Qd2 Qd8 4.Qd5 a5 5.Qe4+ g6 6.Qa8
Qxa8
 9   00:01  1.20   1. ... Nf2+ 2.Qxf2 Qe6+ 3.Kg3 Qxe7 4.Qd4 Qg5+ 5.Qg4 Qe5+
6.Kf2 Qe8 7.dxe8Q
10   00:02  1.22   1. ... Nf2+ 2.Qxf2 Qe6+ 3.Kg3 Qxe7 4.Qd4 Qd8 5.Qe4+ g6 6.Qd5
Kg7 7.Qd4+ Kh7 8.h3
11-  00:03  0.97   1. ... Nf2+ 2.Qxf2 Qe6+ 3.Kg3 Qxe7 4.Qd4 Qd8 5.Qe4+ g6 6.Qd5
Kg7 7.Qd4+ Kh7 8.Qe4 Qxd7 9.Qxg6+ Kxg6
11   00:03  0.97   1. ... Nf2+ 2.Qxf2 Qe6+ 3.Kg3 Qxe7 4.Qd4 Qd8 5.Kf2 g6 6.Qd6
Qe8 7.dxe8Q
11-  00:04  0.96   1. ... h5+ 2.Kh3 Nf4+ 3.Qxf4 Qxf4 4.d8Q Qf5+ 5.Kg3 Qe5+ 6.Kh3
Qxc3 7.Qd5 Qd3 8.Qxh5+ Kg8
11   00:04  0.66   1. ... h5+ 2.Kh3 Nf4+ 3.Qxf4 Qxf4 4.d8Q Qf5+ 5.Kg3 Qe5+ 6.Kf2
Qxc3 7.Qd5 Qb2+ 8.Ke3 Qc3+ 9.Kf4 Qc1+ 10.Ke5 Qb2+ 11.Kd6 Qb4+
12   00:08  0.89   1. ... h5+ 2.Kh3 Nf4+ 3.Qxf4 Qxf4 4.d8Q Qf5+ 5.Kg3 Qe5+ 6.Kf2
Qxc3 7.Qd5 Qc2+ 8.Kg3 Qg6+ 9.Kf4 c3
13   00:13  0.79   1. ... h5+ 2.Kh3 Nf4+ 3.Qxf4 Qxf4 4.d8Q Qf5+ 5.Kg3 Qe5+ 6.Kf2
Qxc3 7.Qd5 Qc2+ 8.Kg3 Qg6+ 9.Kf4 c3
14   00:27  0.92   1. ... h5+ 2.Kh3 Nf4+ 3.Qxf4 Qxf4 4.d8Q Qf5+ 5.Kg3 Qe5+ 6.Kf2
Qxc3 7.Qd5 Qc2+ 8.Ke3 Qc3+ 9.Kf4 Qc1+ 10.Ke5 Qc3+ 11.Ke6 Qe3+
15   00:55  1.02   1. ... h5+ 2.Kh3 Nf4+ 3.Qxf4 Qxf4 4.d8Q Qf5+ 5.Kg3 Qe5+ 6.Kf2
Qxc3 7.Qd5 Qc2+ 8.Ke3 Qc3+ 9.Kf4 Qc1+ 10.Ke5 a5 11.Kd4 Qf4+
16-  01:29  0.77   1. ... h5+ 2.Kh3 Nf4+ 3.Qxf4 Qxf4 4.d8Q Qf5+ 5.Kg3 Qe5+ 6.Kf2
Qxc3 7.Qd5 Qc2+ 8.Ke3 Qc3+ 9.Kf4 Qc1+ 10.Ke5 a5 11.f4 Qb2+ 12.Ke4
16   01:45  0.74   1. ... h5+ 2.Kh3 Nf4+ 3.Qxf4 Qxf4 4.d8Q Qf5+ 5.Kg3 Qe5+ 6.Kf2
Qxc3 7.Qd5 Qc2+ 8.Kg3 Qg6+ 9.Kf4 c3


ProDeo UCI  UCI1:
 1   00:00  0.45   1. ... Qxd4+ 2.cxd4
 1   00:00  0.29   1. ... h5+ 2.Kh3 Qxd4 3.cxd4
 2   00:00  0.29   1. ... h5+ 2.Kh3 Qxd4 3.cxd4
 3   00:00  0.29   1. ... h5+ 2.Kh3 Qxd4 3.cxd4
 4   00:00  0.28   1. ... h5+ 2.Kh3 Nf2+ 3.Qxf2 Qxe7 4.Qc2+
 5   00:00  0.28   1. ... h5+ 2.Kh3 Nf2+ 3.Qxf2 Qxe7 4.Qc2+ Kh6
 5   00:00  0.28   1. ... Qxh2
 5   00:00  0.00   1. ... Qxh2 2.d8Q Qxg2+ 3.Kh4 Qh2+ 4.Kg4 Qg2+
 6   00:00  0.23   1. ... Qxh2 2.g3 h5+ 3.Kf5
 7   00:00  0.00   1. ... Qxh2 2.d8Q Qxg2+ 3.Kh4 Qh2+ 4.Kg4 Qg2+
 8   00:01  0.00   1. ... Qxh2 2.d8Q
 9   00:01  0.00   1. ... Qxh2 2.d8Q Qxg2+
10   00:04  0.00   1. ... Qxh2 2.d8Q
11   00:11  0.00   1. ... Qxh2 2.d8Q Qxg2+ 3.Kh4
12   00:29  0.00   1. ... Qxh2 2.d8Q Qxg2+ 3.Kh4

Regards
Dave



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