12.....kh5 is the correct move
and 12. kf6
your puzzle flags 13.Qg7#,Qh3#,Qh2# as wrong.so therefore,it is defective
I can only do 1 variation
i wanted to play the quicker mate 10.Kf6 Kh7 11. Qg6+ Kh8 12. Qg7# but it said it was wrong :/
13. Qg7# would have worked as well...
guys..the importance is that you should know how to promote the pawn
well it does make a difference if white only has 1 second left on the clock...
Yeah, if your puzzle is called "pawn=queen", it should stop at 6.e6, to reveal the relevance of the 5.Kd7 move.