Author: Marc Bourzutschky
Date: 19:07:59 05/04/04
Go up one level in this thread
On May 04, 2004 at 17:51:48, Uri Blass wrote: >On May 04, 2004 at 12:40:33, Marc Bourzutschky wrote: > >>On May 04, 2004 at 10:44:43, Tord Romstad wrote: >> >>>When there is little thinking time left, my engine annoyingly often fails to win >>>KQKR endgames. Are there any simple but effective eval tricks which can help to >>>play such endgames well without searching very deeply? >>> >>>Tord >> >>This ending is tough because it appears to be inherently tactical, so even with >>good heuristics you'll need a minimum amount of look ahead to see whether a rook >>separated from the king can be forked (check extensions!). On a 16x16 board >>this ending is no longer a win for the queen, further supporting the idea that >>there is probably no general strategy. >> >>-Marc > >In both cases it is dependent in the initial position. > >There are drawn positions because of perepetual check in 8*8 board when it is >impossible to capture the rook because of stalemate and there are winning >position for the queen in 16*16 board when it is possible to capture the rook by >a fork. > >Uri But on the 8x8 board if the queen is to move and he is not in check, and the queen is not attacked, it is always a win. This is true for square boards up to 15x15, but not true for 16x16 (and also not for 4x4, but that is a somewhat special case...) -Marc
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.