why not queen g7 # to finish the job more easy
Because Qg7 is not checkmate, just hangs your queen.
why not just continue it until mate and call it mate in 4?
Why Rf6? I think Qh6+ is better: after Rg7 Q*g7++
2. Qh6+ Kg8.
I haven't seen anyone post Qd7 in response to 1. Rh7 . Is there something I'm missing here?
1. Rh7 Qd7 2. Rxf6+ Rxf6 3. Qxf6+ Kg8 (3...Qf7 4. Qxf7#) 4. Qh8#.
Thanks, I missed that.