Author: Robert Hyatt
Date: 09:25:05 06/21/04
Go up one level in this thread
On June 21, 2004 at 10:57:21, Jaime Benito de Valle Ruiz wrote:
>In this position, engines such as Crafty or Fruit need to reach depths of about
>13 (15-30 secs on an Athlon 1800+) before they find the winning, while many
>other (even amateur) engines show very high scores from depth 1:
>
What Crafty version are you running? all the recent versions see that this is
winning for black instantly, starting at ply=1:
depth time score variation (1)
1 0.00 -5.73 1. ... Qxd5 2. cxd5
1-> 0.00 -5.73 1. ... Qxd5 2. cxd5
2 0.00 -5.83 1. ... Qxd5 2. cxd5 Kg8
2-> 0.00 -5.83 1. ... Qxd5 2. cxd5 Kg8
3 0.00 -1 1. ... Qxd5
3 0.00 -5.38 1. ... Qxd5 2. cxd5 Kg8 3. d6
3-> 0.01 -5.38 1. ... Qxd5 2. cxd5 Kg8 3. d6
4 0.01 -5.68 1. ... Qxd5 2. cxd5 Kg8 3. d6 Kf7
4-> 0.01 -5.68 1. ... Qxd5 2. cxd5 Kg8 3. d6 Kf7
>[d]7k/6p1/1p6/p2Q4/2P1qPKP/8/8/8 b - - 0 50
>
>After the queen exchange this is the position:
>
>[d]7k/6p1/1p6/p2P4/5PKP/8/8/8 b - - 0 51
>
>White cannot stop the passed pawn on a, but the black king can stop the d-one.
>Why some evals work better than others here?
It appears that somehow your test is flawed, as crafty's static eval says black
is winning here...
>
>Jaime
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.