Try: 1.Bxg3? [2.Bxf2#] Rh2!
Solution: 1.Bc7! [2.Bxb6#, 1...Sc8?
2.Sd8 [3.Se6#] Bh3 3.Sc6+ Kc5 4.Sa4#] Kc5 2.Se4+ Kd4 3.Sxg3 [4.Bxb6#] Kc5 4.Se4+ Kd4 5.Sxf2 [6.Bxb6#] Kc5 6.Se4+ Kd4 7.Sc3 [8.Bxb6#] Kc5 8.Bd6+ Kd4
9.Bg3 [10.Bf2#] Rh2
10.Bxh2 ~ 11.Bg1#
