oh, come on, someone must know this, that only took me 2 minutes to figure out, if you don't like it, here is the answer
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1.Nf5+,Kg6 2.Bd2,Nd7 3.Nd6+,Kf6 4.Qf5+,Kg7 5.Qg5+,Kh7 6.Rxd7+,Rf7 7.Qh6+,Kg8 8.Rd8+,Rf8 9.Rxf8#