Author: Kurt Utzinger
Date: 10:48:03 01/13/04
Go up one level in this thread
On January 13, 2004 at 05:18:15, Jaime Benito de Valle Ruiz wrote:
>In this position you can find several passed pawns for both sides (this is
>particularly hard for my engine), plus three connected passed pawns after the
>sacrifice 1. Rxe7, which is an obvious move to consider for human players.
>How much is worth 3 connected passed pawns in the 5th and 6th versus a rook
>here?
>
>[d]3k2r1/r3p2R/4P1b1/2PP1p2/p5p1/8/1B6/4R1K1 w - - 0 1
>
>Does your engine find this move?
>(Mine doesn't. My passed-pawn goes mad giving extreme values for both sides
>during eval, making the search oscillate from one move to another all the time)
>
>Jaime
Rebel 12.00.02 DOS on P4 1.8/28 MB hash
00:00:00 1.00 -6.51 1.Kf2 Bxh7 (2) (0.00)
00:00:00 1.01 -5.88 1.Kg2 Bxh7 (2) (0.00)
00:00:00 1.02 -3.51 1.Rxe7 Kxe7 (2) (0.00)
00:00:00 1.20 -3.16 1.Rf7 Bxf7 2.exf7 (3) (0.00)
00:00:00 1.21 -0.62 1.Rg7 (1) (0.00)
00:00:00 2.00 -1.66 1.Rg7 Rxg7 2.Bxg7 (3) (0.00)
00:00:00 3.00 -2.13 1.Rg7 Rxg7 2.Bxg7 a3 (4) (0.00)
00:00:00 3.01 -2.13 1.Rh2 (1) (0.00)
00:00:00 3.01 -1.32 1.Rh2 f4 2.Rc1 (3) (0.00)
00:00:00 4.00 -1.82 1.Rh2 f4 2.Ba3 Rf8 (4) (0.00)
00:00:00 4.01 -1.54 1.Rg7 Rxg7 2.Bxg7 a3 3.Rc1 (5) (0.00)
00:00:00 5.00 -1.64 1.Rg7 Rxg7 2.Bxg7 a3 3.Be5 Ra4 (6) (0.00)
00:00:00 5.01 -1.64 1.Rh2 (1) (0.00)
00:00:00 5.01 -1.25 1.Rh2 f4 2.Ba3 Kc7 3.Kg2 (5) (0.00)
00:00:00 5.02 -1.25 1.Rh6 (1) (0.00)
00:00:00 5.02 -1.08 1.Rh6 Be8 2.Be5 a3 3.Ra1 (5) (0.00)
00:00:00 6.00 -1.30 1.Rh6 Be8 2.Be5 a3 3.Ra1 Ra4 (6) (0.00)
00:00:00 7.00 -1.31 1.Rh6 a3 2.Be5 a2 3.Ra1 Ra5 4.Bd4 (7)
(0.00) (0)
00:00:00 7.02 -1.31 1.Rh4 (1) (0.00)
00:00:00 7.02 -1.00 1.Rh4 Be8 2.Ba3 Rb7 3.Kg2 Rb3 4.Ra1
(7) (0.00) (0)
00:00:00 7.05 -1.00 1.Rxe7 (1) (0.00)
00:00:00 7.05 -0.86 1.Rxe7 Kxe7 2.d6 Kd8 3.c6 f4 4.e7 Kc8
5.Bd4 Rxe7 6.Rxe7 Rf8 (12) (0.00) (0)
00:00:01 8.00 -0.76 1.Rxe7 Rxe7 2.Bf6 Ke8 3.Bxe7 Kxe7 4.d6
Kf6 5.c6 f4 (10) (0.00) (0)
00:00:03 9.00 -0.56 1.Rxe7 Kxe7 2.d6 Kd8 3.c6 Be8 4.Bf6
Kc8 5.d7 Bxd7 6.cxd7 Rxd7 7.exd7 Kxd7
8.Re7 Kd6 9.Ra7 Rc8 10.Bg7 Rc1 11.Kf2
Rc7 12.Ra6 (23) (4.00) (1)
00:00:11 10.00 -0.34 1.Rxe7 Kxe7 2.d6 Kd8 3.c6 Be8 4.Bd4
Rh7 5.Bb6 Kc8 6.d7 Rxd7 7.cxd7 (13)
(3.75) (3)
00:00:30 11.00 0.00 1.Rxe7 Kxe7 2.d6 Kd8 3.Bd4 Ra6 4.c6
Rxc6 5.Bf6 Kc8 (10) (3.00) (12)
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