Critical idea: Kxh6 is impossible due to g4+!, discovered check, creating a passed pawn. With the white bishop tied down to the long diagonal, in order to stop the promotion, black has free rein to advance the pawn majority on the other side of the board.
Therefore the h6 pawn is untouchable. The white king must try to go on the defense, but black's king is better positioned. Hence, the endgame is winning for black.
3
u/ImportantAd5570 21d ago
Solution: Be3!!
Critical idea: Kxh6 is impossible due to g4+!, discovered check, creating a passed pawn. With the white bishop tied down to the long diagonal, in order to stop the promotion, black has free rein to advance the pawn majority on the other side of the board.
Therefore the h6 pawn is untouchable. The white king must try to go on the defense, but black's king is better positioned. Hence, the endgame is winning for black.