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Fantastic f6, I dont realized in my firsts attempt that f6 was the solution. Only after annalyse this position several times that I realized the should be done.

Queen mating on h5 seemed the obvious threat, but there had to be a way to get there while dealing with the possibility of 1...e3. That means staying on the eighth rank, but the black bishop is guarding h8. Blocking with the pawn by 1. f6 appears at first glance to be futile, as the bishop simply captures the pawn. It took me quite some time to see the resulting mating sequence

Could it? Please demonstrate how.

It's best not to make comments like that unless you can back them up.