Author: Laurens Winkelhagen
Date: 06:08:29 11/22/04
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On November 22, 2004 at 07:18:53, Uri Blass wrote: >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. but not if they are of different color: I just wanted to discuss peter's point;-) > >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. True of course, Laurens. > >Uri
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