Author: Richard Pijl
Date: 16:45:44 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
The Baron 1.2.0 beta 8 finds it quite fast (P4-2.4):
ply time nodes score pv
5(12). 0:00.05 13719 +0.23 Rh7-h4 Ra7xa4 Kg1-f2 Ra4-a2 Re1-e2
6(12)& 0:00.11 23877 +0.27 Rh7-h4 Ra7xa4 Re1-a1 Ra4xa1 Bb2xa1 Bg6-e8
Rh4-h7 Be8-b5
6(14). 0:00.16 36818 +0.27 Rh7-h4 Ra7xa4 Re1-a1 Ra4xa1 Bb2xa1 Bg6-e8
Rh4-h7 Be8-b5
7(13)& 0:00.27 64496 +0.60 Rh7-h4 Ra7xa4 Re1-a1 Ra4xa1 Bb2xa1 Bg6-e8
c5-c6 Kd8-c7 Rh4-h7
7(16). 0:00.44 104947 +0.60 Rh7-h4 Ra7xa4 Re1-a1 Ra4xa1 Bb2xa1 Bg6-e8
c5-c6 Kd8-c7 Rh4-h7
8(17)& 0:01.09 225775 +0.56 Rh7-h4 Ra7xa4 Re1-a1 Ra4xa1 Bb2xa1 Kd8-c7
Ba1-e5 Kc7-b7 c5-c6 Kb7-b6 c6-c7 Rg8-a8
d5-d6
8(18)+ 0:01.64 352007 +0.95 Bb2-e5 Kd8-e8 Re1-b1 Ra7-a8 c5-c6 Bg6xh7
c6-c7 Rg8-h8 Rb1-b8 Ra8xb8 c7xb8Q
8(18)& 0:02.03 464963 +1.36 Bb2-e5 f5-f4 Rh7-h4 Bg6-d3 Be5xf4 Ra7xa4
Re1-d1 Ra4-d4
8(27)& 0:03.35 831328 +1.42 Rh7xe7 Kd8xe7 d5-d6 Ke7-d8 c5-c6 Kd8-c8
d6-d7 Kc8-c7 e6-e7 Ra7-a8 Bb2-f6 f5-f4
d7-d8Q Ra8xd8 e7xd8Q Rg8xd8 Bf6xd8 Kc7xd8
8(27). 0:03.40 858242 +1.42 Rh7xe7 Kd8xe7 d5-d6 Ke7-d8 c5-c6 Kd8-c8
d6-d7 Kc8-c7 e6-e7 Ra7-a8 Bb2-f6 f5-f4
d7-d8Q Ra8xd8 e7xd8Q Rg8xd8 Bf6xd8 Kc7xd8
9(25)+ 0:05.43 1425808 +1.77 Rh7xe7 Kd8xe7 d5-d6 Ke7-d8 c5-c6 Rg8-f8
Bb2-c3 f5-f4 e6-e7 Ra7xe7 Re1xe7 Rf8-e8
Re7xe8 Bg6xe8 d6-d7 Be8-g6 Kg1-f2
9(25)& 0:08.23 2264805 +1.97 Rh7xe7 Ra7xe7 Bb2-f6 Kd8-e8 c5-c6 f5-f4
Re1-c1 Rg8-g7 d5-d6 Re7xe6 c6-c7 Rg7xc7
9(25). 0:09.28 2583224 +1.97 Rh7xe7 Ra7xe7 Bb2-f6 Kd8-e8 c5-c6 f5-f4
Re1-c1 Rg8-g7 d5-d6 Re7xe6 c6-c7 Rg7xc7
10(27)+ 0:13.23 3665681 +2.32 Rh7xe7 Ra7xe7 Bb2-f6 Kd8-e8 c5-c6 f5-f4
Re1-c1 Ke8-f8 c6-c7 Rg8-g7 c7-c8Q Re7-e8
10(28)& 0:18.29 5227215 +2.53 Rh7xe7 Kd8xe7 d5-d6 Ke7-d8 Bb2-f6 Kd8-c8
c5-c6 Bg6-e8 Re1-c1 Be8xc6 Rc1xc6 Kc8-b8
d6-d7 Ra7xd7 e6xd7 Kb8-b7 d7-d8Q
10(33). 0:20.76 5987722 +2.53 Rh7xe7 Kd8xe7 d5-d6 Ke7-d8 Bb2-f6 Kd8-c8
c5-c6 Bg6-e8 Re1-c1 Be8xc6 Rc1xc6 Kc8-b8
d6-d7 Ra7xd7 e6xd7 Kb8-b7 d7-d8Q
11(32)+ 0:38.39 10972101 +2.88 Rh7xe7 Kd8xe7 d5-d6 Ke7-d8 c5-c6 Ra7xa4
Bb2-f6 Kd8-e8 c6-c7 Ra4-f4 d6-d7 Ke8-f8
11(32)& 0:46.79 13407374 +2.95 Rh7xe7 Kd8xe7 d5-d6 Ke7-d8 c5-c6 Bg6-e8
Bb2-d4 Be8xc6 Bd4xa7 Rg8-h8 Ba7-b6 Kd8-c8
Re1-e5
11(32). 0:53.49 15381425 +2.95 Rh7xe7 Kd8xe7 d5-d6 Ke7-d8 c5-c6 Bg6-e8
Bb2-d4 Be8xc6 Bd4xa7 Rg8-h8 Ba7-b6 Kd8-c8
Re1-e5
This page took 0 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.