Author: Robert Hyatt
Date: 13:02:32 11/17/04
Go up one level in this thread
On November 17, 2004 at 14:04:06, Uri Blass wrote: >On November 17, 2004 at 13:35:16, Robert Hyatt wrote: > >>On November 17, 2004 at 08:39:40, milix wrote: >> >>>On November 17, 2004 at 08:27:47, Jan K. wrote: >>> >>>>Under winboard/arena which of the following positions should be claimed(/can be >>>>claimed) as drawn by insufficient material-KBKN, KBKNN, KNNKNN? I thought that >>>>KBKN can be claimed as a draw, but once this position happened under Fritz GUI, >>>>my engine claimed draw and stopped playing but GUI still expected me to move and >>>>my engine lost on time. Thx. >>> >>>[D] knB5/8/1K6/8/8/8/8/8 w - - 0 1 >>> >>>White to move and mate in one - so this position is not a draw. The king is in >>>the wrong corner. >> >> >>Fine, but what was black's last move? >> >>Had to be the knight. Which could only have come from a6 or c6 otherwise it >>would have captured the white king. Therefore there was a forced draw one move >>earlier, where black left the knight on a6/c6 and moved his king instead. >> >>It's a draw. > >It is not a draw by insufficient material. >A program may evaluate it as 0.00 but not stop moving. > >Uri It is a draw by insufficient material so far as I can see. The definition of "insufficient material to force checkmate" seems pretty clear. Neither side can _force_ checkmate here.
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