Author: Uri Blass
Date: 04:18:53 11/22/04
Go up one level in this thread
On November 22, 2004 at 05:28:41, Laurens Winkelhagen wrote: >On November 22, 2004 at 05:23:57, Laurens Winkelhagen wrote: > >>On November 21, 2004 at 23:48:34, Peter Darin wrote: >> >>> >>>IMO In the position black can mate and it is a mating material because of the >>>White pawns which can obstruct the white king and white can be mated. >>> >>>If a game is Knight vs Knight or Bishops vs Bishops (with no pawns) it is a draw >>>due to insufficient material. >>> >>>Regards >>> >>>Peter >> >>By that reasoning even KNvKN and KBvKB are not cases of insufficient mating >>material. In both cases the one piece can obstruct it's king so that the >>opponents piece can mate. Earlier in this thread we already saw an example of >>KBvKB. KNvKN is similar of course. (hmm lets try some FEN of the top of my head, >>forgive me when this diagram fails) >> [D] kn6/2N5/1K6/8/8/8/8/8 - - 1 0 > >retry: > >[D] kn6/2N5/1K6/8/8/8/8/8 b - - 0 1 > If you replace the knights by bishops it is a draw by insufficiant material. KB vs KB when the bishops have the same color is a draw. Note that in KN vs KN it is impossible to get mate in more than 1 move when in the relevant diagram it is possible to get even forced mate in 4 moves as I showed. Uri
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