Author: Uri Blass
Date: 07:24:11 06/21/02
Go up one level in this thread
On June 21, 2002 at 09:24:04, Richard Pijl wrote: >On June 21, 2002 at 08:53:00, Robert Henry Durrett wrote: > >>On June 21, 2002 at 06:28:27, Kurt Utzinger wrote: >> >>>On June 21, 2002 at 04:38:04, Uri Blass wrote: >>> >>>>[D]8/8/8/5P2/1p1b4/pNk5/K7/8 b - - 0 103 >>>> >>> >>>There is no chance for today's computer programs to see that this is a draw. >>>Even without the white pawn, none of the 20 programs tested by me have an idea >>>of draw. >>> >>>Kurt >> >>Why, specifically, is this true? [I do not challenge the statement, but ask >>about the software.] >> >>What, specifically, would have to be done to a chess engine to make it see these >>things? >> >It doesn't seem very difficult to add this knowledge, just a matter of doing it. >The problem is that white has sufficient moves to avoid zugzwang, the squares >before the pawns are controlled by white and the bishop is of the wrong color, >not able to support the advance of the pawns. >Richard. Yes 6 squares is practically enough to avoid zunzwang when the danger of threat is only from a king and a bishop The bishop can control 4 and the king can control 2 but they cannot control all the relevant 6 different squares. king at e2 and bishop at e5 can control 6 different squares that the knight at e4 controls but the knight at e4 has 8 legal moves and when the knight has only 6 legal moves it is not possible. Uri
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.