1 Nxg6 Kg8 2. Qg7+ Rxg7 3 Nh6++
great! What after 1...Nxg6?
If 1...Nxg6 then
2.Rxd8+ Qxd8 3.Rxd8+ Rxd8 4.Bxf6+ Kg8 (4...Rxf6 5.Qg7#) 5.Bxd8
It's all in the move list.