It looks like quite a complex composition, but somehow my eye fell on the possible mate with Ne7#. The only problem is the rook on c7. So i looked for another mate threat that can only be stopped by the rook leaving the 7th rank. Qc6 creates a direct mate threat on e6 and f6, that can be stopped by Rxc6, but also Nd6. I was just lucky (again) that after Nd6 white has Nxd6#
Qc6 creates a direct mate threat on e6 and f6, that can be stopped by Rxc6, but also Nd6. I was just lucky (again) that after Nd6 white has Nxd6#