i knew how to force mate, and there was a certain point where it made me lose because i missed a mate in 1 and tried a mate in 3, when you are supposed to push the pawn i tried Qg5, followed by Kh7, Qh5# and it said puzzle failed... shouldn't it have said something like 'good move, but you can do better'?
Puzzle http://en.lichess.org/training/23587
Puzzle http://en.lichess.org/training/23587