Originally posted by Krapsparov
Are you the same David Tebb that hammered Kasparov?
Well done :o)
I have not looked at the position in any great depth but after kxn, can the opposing king not take the bishop but instead eventualy get in front of the pawn on h2?
Yeah, I'm the guy. Although I wouldn't say I 'hammered' him. It was more a case of reluctantly accepting his piece sacrifice and hanging on for dear life until his attack ran out of steam and then mopping up in the endgame.
Coming back to this game, if White doesn't take the bishop then he will easily lose because the bishop is the "right colour". In other words, the bishop controls the queening square of the pawn, so that the defending side cannot just sit in the corner and acheive a draw by stalemate.
For instance in this position (with White to move) White must move his King to g1, allowing ..Kg3, followed by ..h2 and the pawn queening.
If it was Black's move, he would just make a waiting move with either his bishop or King in order to give White the move (putting him in 'zugzwang'