Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Perpetual Check

Author: David Dahlem

Date: 15:49:46 09/04/04

Go up one level in this thread


[D]q6k/2Q3p1/4Bp1p/1b1P4/1R5P/6P1/r4PK1/8 b - - 0 1

ProDeo sees the perpetual line, drops it for a while, comes back to it, and
finally has a draw score after 5 minutes 35 seconds.

ProDeo UCI  UCI1:
 1   00:00  5.66   1. ... Rxf2+ 2.Kxf2
 1   00:00  0.39   1. ... Qa5
 2   00:00  M500  1. ... Qa5 2.Qb8+ Qd8 3.Qxd8+ Be8 4.Qxe8+ Kh7
 2   00:00  6.52   1. ... Bd7 2.Rb8+ Be8 3.Rxa8 Rxa8
 2   00:00  4.53   1. ... Ra1 2.Rxb5
 2   00:00  1.68   1. ... Qe8 2.Bf5
 2   00:00  1.67   1. ... Ra7 2.Qc8+ Qxc8 3.Bxc8
 3   00:00  1.67   1. ... Ra7 2.Qc8+ Qxc8 3.Bxc8
 4   00:00  1.43   1. ... Ra7 2.Qf4 Ra4 3.Rxa4 Bxa4
 5   00:00  1.40   1. ... Ra7 2.Qc2 Ra6 3.Kg1 Qe8
 6   00:00  1.52   1. ... Ra7 2.Qc2 Ra2 3.Qb1 Ra1 4.Qg6
 6   00:00  1.52   1. ... Rxf2+
 6   00:00  1.52   1. ... Ra7 2.Qc2 Ra2 3.Qb1 Ra1 4.Qg6
 7   00:00  1.64   1. ... Ra7 2.Qc2 Ra6 3.Qc8+ Qxc8 4.Bxc8 Rb6 5.Rd4
 7   00:01  1.64   1. ... Rxf2+
 7   00:01  0.68   1. ... Rxf2+ 2.Kxf2 Qa2+ 3.Ke3 Qa3+ 4.Kd2 Qxb4+ 5.Qc3 Qa4
6.Qc8+ Be8 7.d6 Qd4+ 8.Ke1
 8   00:02  0.60   1. ... Rxf2+ 2.Kxf2 Qa2+ 3.Ke3 Qa3+ 4.Kd2 Qxb4+ 5.Qc3 Qa4
6.Qc8+ Be8 7.Ke1 Qa1+ 8.Kf2 Qb2+ 9.Kg1 Qd4+ 10.Kg2 Qe4+ 11.Kg1 Qe3+ 12.Kh2 Qe2+
13.Kh3
 9   00:03  0.60   1. ... Rxf2+ 2.Kxf2 Qa2+ 3.Ke3 Qa3+ 4.Kd2 Qxb4+ 5.Qc3 Qf8
6.Bh3
10   00:12  2.84   1. ... Rxf2+ 2.Kxf2 Qa2+ 3.Kg1 Qa1+ 4.Kh2 Qa2+ 5.Kh3 Bf1+
6.Kg4 Qe2+ 7.Kf5 Qd3+ 8.Re4 Bh3+ 9.g4 Bxg4+ 10.Kxg4
10   00:16  1.89   1. ... Ra5 2.Kh2
10   00:19  1.70   1. ... Ra7 2.Qc5 Ba6
11   00:25  1.74   1. ... Ra7 2.Qc8+ Qxc8 3.Bxc8 Be8 4.Rb7 Ra8 5.Rc7
12   00:36  1.82   1. ... Ra7 2.Qc8+ Qxc8 3.Bxc8 Ra8 4.Be6 Be8 5.Rg4 Ra6 6.Bc8
Rd6 7.Re4 Bb5 8.Re7
13   01:23  1.69   1. ... Ra7 2.Qc5 Ba6
13   02:25  1.69   1. ... Rxf2+
13   05:35  0.00   1. ... Rxf2+ 2.Kxf2 Qa2+ 3.Kg1 Qa1+

Shredder 8 also sees the perpetual, but not with a draw score.

Shredder 8  UCI1:
 1+  00:00  4.67   1. ... Rd2 2.Rxb5
 1+  00:00  5.54   1. ... Rd2 2.Rxb5
 1   00:00  5.50   1. ... Rd2 2.Rxb5
 1   00:00  5.45   1. ... Qa3 2.Rxb5
 1   00:00  1.21   1. ... Bd3
 2+  00:00  1.83   1. ... Bd3 2.Qb6
 2+  00:00  2.49   1. ... Bd3 2.Kg1
 2   00:00  9.38   1. ... Bd3 2.Rb8+ Qxb8 3.Qxb8+ Kh7
 2-  00:00  9.37   1. ... Rd2 2.Qxg7+ Kxg7
 2-  00:00  9.02   1. ... Rd2 2.Qxg7+ Kxg7
 2   00:00  5.54   1. ... Rd2 2.Rxb5
 2-  00:00  5.53   1. ... Qa5 2.Rxb5 Qxc7
 2   00:00  5.53   1. ... Qa5 2.Qb8+ Kh7 3.Rxb5
 2-  00:00  5.52   1. ... Qe8 2.Qxg7+ Kxg7
 2-  00:00  5.17   1. ... Qe8 2.Qxg7+ Kxg7
 2   00:00  3.16   1. ... Qe8 2.Rg4
 2-  00:00  3.15   1. ... Ra7 2.Rg4 Rxc7
 2-  00:00  2.80   1. ... Ra7 2.Rg4 Rxc7
 2   00:00  2.34   1. ... Ra7 2.Qc8+ Qxc8 3.Bxc8
 3+  00:00  2.61   1. ... Ra7 2.Qc8+ Qxc8 3.Bxc8 Kh7
 3   00:00  2.81   1. ... Ra7 2.Qc8+ Qxc8 3.Bxc8 Rc7 4.Rxb5 Rxc8
 4   00:00  2.78   1. ... Ra7 2.Qc8+ Qxc8 3.Bxc8 Bd7 4.Bxd7 Rxd7
 5   00:00  2.78   1. ... Ra7 2.Qc8+ Qxc8 3.Bxc8 Bd7 4.Rb8 Kh7
 6   00:00  2.75   1. ... Ra7 2.Qc8+ Qxc8 3.Bxc8 Bd7 4.Rb8 Kh7 5.Bxd7 Rxd7 6.Kf3
 7   00:00  2.72   1. ... Ra7 2.Qc8+ Qxc8 3.Bxc8 Bd7 4.Rb7 Rxb7 5.Bxb7 Kg8 6.d6
 7-  00:00  2.71   1. ... Rxf2+ 2.Kxf2 Qa2+ 3.Ke3 Qa3+ 4.Kd4 Qxb4+ 5.Ke3
 7   00:00  2.53   1. ... Rxf2+ 2.Kxf2 Qa2+ 3.Kg1 Qa1+ 4.Kh2 Qa2+ 5.Kh3 Bf1+
6.Kg4 Qe2+ 7.Kf5 Qd3+ 8.Re4 Qf3+ 9.Kg6 Qxe4+ 10.Kf7
 8   00:00  2.53   1. ... Rxf2+ 2.Kxf2 Qa2+ 3.Kg1 Qa1+ 4.Kh2 Qa2+ 5.Kh3 Bf1+
6.Kg4 Qe2+ 7.Kf5 Qd3+ 8.Re4 Qf3+ 9.Kg6 Qxe4+ 10.Kf7
 9   00:00  2.34   1. ... Rxf2+ 2.Kxf2 Qa2+ 3.Kg1 Qa1+ 4.Kh2 Qa2+ 5.Kh3 Bf1+
6.Kg4 Qe2+ 7.Kf5 Qd3+ 8.Re4 Bh3+ 9.Kg6 Qxe4+ 10.Kf7
10-  00:02  2.09   1. ... Rxf2+ 2.Kxf2 Qa2+ 3.Kg1 Qa1+ 4.Kh2 Qa2+ 5.Kh3 Bf1+
6.Kg4 Qe2+ 7.Kf5 Qd3+ 8.Re4 Bh3+ 9.Kg6 Qxe4+ 10.Kh5 Bxe6 11.Qxg7+ Kxg7
10   00:03  1.85   1. ... Rxf2+ 2.Kxf2 Qa2+ 3.Kg1 Qa1+ 4.Kh2 Qa2+ 5.Kh3 Bf1+
6.Kg4 Qe2+ 7.Kf5 Qd3+ 8.Re4 Bh3+ 9.g4 Qf3+ 10.Kg6 Qxe4+ 11.Bf5
11   00:04  1.85   1. ... Rxf2+ 2.Kxf2 Qa2+ 3.Kg1 Qa1+ 4.Kh2 Qa2+ 5.Kh3 Bf1+
6.Kg4 Qe2+ 7.Kf5 Qd3+ 8.Re4 Bh3+ 9.g4 Qf3+ 10.Kg6 Qxe4+ 11.Bf5 Qe8+ 12.Qf7
12+  00:07  2.10   1. ... Rxf2+ 2.Kxf2 Qa2+ 3.Kg1 Qa1+ 4.Kh2 Qa2+ 5.Kh3 Bf1+
6.Kg4 Qe2+ 7.Kf5 Qd3+ 8.Re4 Bh3+ 9.g4 Qf3+ 10.Kg6 Bxg4 11.Bxg4 Qf5+
12+  00:09  2.60   1. ... Rxf2+ 2.Kxf2 Qa2+ 3.Kg1 Qa1+ 4.Kh2 Qa2+ 5.Kh3 Bf1+
6.Kg4 Qe2+ 7.Kf5 Qd3+ 8.Re4 Bh3+ 9.g4 Qf3+ 10.Kg6 Bxg4 11.Bxg4 Qf5+ 12.Kxf5 g6+
13.Kxg6
12   00:12  2.60   1. ... Rxf2+ 2.Kxf2 Qa2+ 3.Kg1 Qa1+ 4.Kh2 Qa2+ 5.Kh3 Bf1+
6.Kg4 Be2+ 7.Kf5 Bd3+ 8.Re4 Bxe4+ 9.Kg4 Qe2+ 10.Kh3 Kh7 11.Bg8+ Kxg8 12.Qxg7+
Kxg7
13   00:24  2.60   1. ... Rxf2+ 2.Kxf2 Qa2+ 3.Kg1 Qa1+ 4.Kh2 Qa2+ 5.Kh3 Bf1+
6.Kg4 Be2+ 7.Kf5 Bd3+ 8.Re4 Bxe4+ 9.Kxe4 Qb1+ 10.Kf4 Qf1+ 11.Ke3 Qe1+ 12.Kf3
Qd1+ 13.Ke3 Qe1+ 14.Kf3 Qd1+ 15.Ke3 Qe1+
14-  00:39  2.35   1. ... Rxf2+ 2.Kxf2 Qa2+ 3.Kg1 Qa1+ 4.Kh2 Qa2+ 5.Kh3 Bf1+
6.Kg4 Be2+ 7.Kf5 Bd3+ 8.Re4 Bxe4+ 9.Kxe4 Qb1+ 10.Kd4 Qg1+ 11.Kc3 Qc1+ 12.Kb3
Qxc7 13.d6 Qxd6
14   01:21  1.86   1. ... Rxf2+ 2.Kxf2 Qa2+ 3.Kg1 Qa1+ 4.Kh2 Qa2+ 5.Kh3 Bf1+
6.Kg4 Be2+ 7.Kf5 Bd3+ 8.Re4 Bxe4+ 9.Kxe4 Qb1+ 10.Kd4 Qg1+ 11.Kd3 Qd1+ 12.Ke3
Qe1+ 13.Kd4 Qg1+ 14.Kd3 Qd1+ 15.Ke3 Qe1+
15-  02:39  1.61   1. ... Rxf2+ 2.Kxf2 Qa2+ 3.Kg1 Qa1+ 4.Kh2 Qa2+ 5.Kh3 Bf1+
6.Kg4 Be2+ 7.Kf5 Bd3+ 8.Re4 Bxe4+ 9.Kxe4 Qb1+ 10.Kd4 Qg1+ 11.Kd3 Qd1+

Regards
Dave



This page took 0.02 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.