Negative results not count on Chess board!
Solve it!
Puzzle #2: 1. ...Kh5 2. c5 Ne4+ 3. Dxe4 fxe4 4. f5 Kg5 5. cxb6 h1=N#
at 5. cxb6, any pawn move is equally good, it's a mate no matter what
I'm not sure if this is the right solution but it is the best i can come up with.
Well white doesn't have to play 2. Qxf6 but it's always tempting to win material. In this case it is followed by a mate so the best move would be to keep the queen protecting the h1 square. That would follow by the line I gave.
I also realised that playing 2. Qg2 Rxg2+ 3. Kxg2 would probarly be even better for white but it is a mate anyway, it would leave more room for mistakes to black.
I know that they are really hard! So, please, take your time!
You will benefit from these Gold Examples, what is really magic Chess!
Greg
AWARDCHESS