Author: Gordon Rattray
Date: 17:07:00 02/11/04
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On February 11, 2004 at 17:31:54, GuyHaworth wrote: > >The draw is illustrated ... but the maxDTM figures are not necessarily all they >seem. > >Eugene's indexing does not spot unreachable positions other than those with two >men on one square and those with the sntmK in check. > >Thus, although there is just one KQQKNN wtm win in 1 for Black, allegedly, it is >actually unreachable. > >There are other instances where one, more, even all, of the maxDTM positions are >unreachable - and, before you ask, I don't have a list of them all. > >The unique KQPKQP wtm mate in 114 [from Peter Karrer] is an example: the wK is >in check from a P on d7, and also from the bQ on e2 - two impossibilities in one >position. > >g Interesting points - thanks for highlighting them. When I was trying to figure out the one in my initial post, I wasn't sure if I needed make sure it was reachable or not. After so long, it didn't make any difference. :-) Gordon
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