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Subject: Re: a difficult position ?

Author: Ed Schröder

Date: 14:53:36 08/08/00

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On August 08, 2000 at 11:55:12, Philippe Signoret wrote:

>This is a position from a game I played against Fritz 5.32 in rated mode 2150
>elo
>The move rook h4 is winning for black.But it takes a long time for programs to
>find it:
>30 min for Schredder4, and about 2 hours for Fritz or CM6000
>
>k1bq2rr/p4p2/PpnBp3/3pP1p1/2pP1nB1/Q1P2N2/1RP2P1P/1R4K1 b - -
>
>Please try this position with other programs.

[d]k1bq2rr/p4p2/PpnBp3/3pP1p1/2pP1nB1/Q1P2N2/1RP2P1P/1R4K1 b - - bm Rh4;

Rebel Century 2.0 = 2:33
Rebel Century 3.0 (beta) = 1:05

Athlon 600 128 Mb

Ed


00:00  05.08  -0.11  1..Re8 2.Rb5 Nb8 3.Ra5 f6
00:01  06.12  0.09  1..Qd7 2.Rb5 Nb8 3.Ra5 f5 4.exf6 Bxa6
00:02  07.00  0.09  1..Qd7 2.Rb5 Nb8 3.Ra5 f5 4.exf6 Bxa6
00:04  08.00  0.00  1..Qd7 2.Kf1 Nb8 3.Rxb6 axb6 4.Rxb6 Nxa6 5.Rxa6+ Bxa6
6.Qxa6+ Qa7 7.Qc6+ Qb7 8.Qa4+ Qa7 9.Qc6+ Qb7 10.Qa4+ Qa7
00:07  08.12  0.02  1..Ne2+ 2.Kf1 Nxc3 3.Qxc3 f5 4.Bxf5 exf5 5.Qa3 g4 6.Qa4
00:09  09.00  0.26  1..Ne2+ 2.Kf1 Nxc3 3.Qxc3 f5 4.Bxf5 exf5 5.Qa3 Rh3 6.Rd1
00:19  10.00  0.41  1..Ne2+ 2.Kh1 Nxc3 3.Qxc3 f5 4.exf6 Qxd6 5.Qe3 Nd8 6.Ra1 Kb8
00:37  11.00  0.38  1..Ne2+ 2.Kh1 Nxc3 3.Qxc3 f5 4.exf6 Qxd6+ 5.Qe3 Rh7 6.Ra1
Nb4 7.f7 Rgh8
01:30  12.00  0.66  1..Ne2+ 2.Kh1 Nxc3 3.Qxc3 f5 4.exf6 Qxd6 5.Qe3 Rg6 6.h3 Bxa6
7.Nxg5
02:33  12.20  0.66  1..Rh4
05:57  12.20  2.69  1..Rh4 2.Nxh4 gxh4 3.Qa4 Rxg4+ 4.Kh1 Na5 5.Rg1 Rxg1+  [h8h4]


00:00:03  8.00  0.15   1..Qd7 2.Rb5 Nb8 3.Ra5 Nxa6 4.Rxa6
                       Bxa6 5.Qxa6 f5 6.Bxf5 exf5 7.Rxb6  (2) (0.00)

00:00:08  9.00  0.10   1..Qd7 2.Kf1 Rd8 3.Bb4 Nxb4 4.Rxb4
                       Kb8 5.Ke1 Qc7 6.Rb5 Ng2  (5) (0.00)

00:00:18 10.00  0.10   1..Qd7 2.Kf1 Rd8 3.Bb4 Nxb4 4.Rxb4
                       Kb8 5.Ke1 Qc7 6.Rb5 Ng2 7.Kf1  (12) (0.00)

00:00:38 10.17  0.10   1..Ne2+
00:00:39 10.17  0.34   1..Ne2+ 2.Kf1 Nxc3 3.Qxc3 f5 4.exf6
                       Qxd6 5.f7 Rg7 6.Ra2 Rxf7  (38) (0.00)

00:00:48 11.00  0.46   1..Ne2+ 2.Kf1 Nxc3 3.Qxc3 f5 4.exf6
                       Qxd6 5.Re1 Rh7 6.Rbb1 Bxa6 7.Bxe6  (39) (0.00)

00:01:05 11.19  0.46   1..Rh4
00:01:51 11.19  2.22   1..Rh4 2.Nxh4 gxh4 3.Qa4 Rxg4 4.Kh1
                       Bd7 5.Ba3 Rg2 6.Rb5  (65) (0.00)

00:02:37 12.00  2.41   1..Rh4 2.Nxh4 gxh4 3.Qa4 Rxg4 4.Kh1
                       Bd7 5.h3 Nxh3 6.Rxb6 axb6 7.f3 Nxe5  (120) (0.00)

00:10:20 13.00  3.17   1..Rh4 2.h3 Nxh3 3.Bxh3 Rxh3 4.Ne1
                       Nxd4 5.Qc5 Ne2 6.Kf1 Bd7 7.Qc7 Qxc7
                       8.Bxc7 Nxc3  (371) (0.00)

00:16:57 14.00  3.32   1..Rh4 2.h3 Nxh3 3.Bxh3
00:40:13 15.00  3.53   1..Rh4 2.Nxh4



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