Yea, 4 moves is usually alot better than 5 moves + endgame. :)
Homemade puzzle #1 (Mate in 4!)
1.Nxf6+ also seems trivially winning to me. Pointless puzzle I'm afraid.
Starting out a bishop ahead and with a dangerous amount of pieces "aimed" at the opposing king position it is hard to find a move that doesn't lead to winning advantage.
It seems that this isn't actually even a mate in four; sure, if black doesn't allow the mate, he's clearly losing, but clearly losing is not as bad as mated.
If Black avoids mate (taking with knight OR not to take rook), White then gets an advantage...
Meaning: White would still win...
The problem with setting up this puzzle, is that moves 3.Qg4+ and 3.Qg3+ are both right. It just reads 3.Qg3+ as the correct one.
And generally Nxf6+ before Rxd7 is the correct order of moves.
In both cases, Black can avoid direct mate threats.
After 1.Rxd7, Black will reply with Nxd7, not Qxd7. In the case of Nxf6+, black has to give up more material to avoid mate.
agree with tajamoen