George Duke wrote on Fri, Sep 7, 2012 03:39 PM UTC:
White-Karpov needs a Win to stay champion,
http://www.chessgames.com/perl/chessgame?gid=1067179, so picking off the Pawn Move 28 looks good. Hereabouts is where White goes wrong. Instead '29 Bf3...', the other Bishop, and there should be no annoying 29 ...Nh5. That light Bishop in the real full score is on the same g2 to the bitter end in defeat, and this Move 29 can bring the piece into play towards Win. Not to retreat the dark Bishop, moving it twice in a row, is the risk to try for a win. Between the two moves, one supports the f4-Pawn about to be attacked, and the improvement attacks the h5 where Black Knight would try to launch.
___________________________ (One relevant computational minutia: at this point White pieces and pawns attack central sixteen squares about 24 times to Black's only 13 times. Black pieces cum pawns are peripherally distributed, or blocked, and White can indeed win from this critical juncture up and down a move or two of Move 30 -- preventing Kasparov from having become new champion.)
