Originally posted by vivifyWhite thinks differently from me, for I would have finished the game with 42.Re3+ Kd2 43.Qd3#. I did not even see the other mating idea. I believe I would have done other things differently too.
Saw this game at Chess.com. White is the definition of unorthodox here, with an unusual opening, and an odd way of getting black's king vulnerable; check the way White skips obvious captures in favor of position.
M. Botvinnik vs. V. Chekhover (Annotations not mine).
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RN ...[text shortened]... 38.Qf5+ Kc6 39.d5+ Kc5 40.Ba3+ Kxc4 41.Qe4+ Kc3 42.Bb4+ Kb2 43.Qb1#