Author: Ron Murawski
Date: 08:08:20 11/03/01
Go up one level in this thread
On November 03, 2001 at 07:07:55, Colin Frayn wrote: >OK, this is probably the stupidest post you'll ever read on CCC. > >Take the following completely trivial endgame position; > >[D]8/8/8/3P3k/K3p3/8/8/8 w - - > >It's obvious to anyone who's ever vaguely heard of chess that this is a draw. > >However, if one carefully codes in the promotion squares algorithm, it's clear >that the white king can catch the black pawn, but the black king cannot catch >the white pawn (as it has the move). Now, the problem is that (obviously) if >the white king attempts to catch the black pawn then of course the black king >moves one square closer to the white pawn, and can now catch it. > >So, statically, how do you say that this is obviously a draw? Bear in mind that >you have to be careful about similar positions where the extra square advantage >given by the side with a passed pawn having the move might make all the >difference. > >This has got to be easy, right? > >Incidentally, just so that I cover my back and prove that I'm not being totally >stupid, Crafty v18.11 static evaluation scores this as +6.20 for white. > >Cheers, >Col Colin, How about this approach? For queening pawns: If both pawns are unobstructed and do not pass through any enemy-controlled squares and neither pawn gives check as it queens, then, from the point of view of advancing pawns, this position is even. For king-chases-down-pawn: If both kings do not pass through enemy-controlled squares and each can chase down the opposing pawn, then, from this point of view, the position is even. Best regards, Ron
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.