Solution: 1.Kf6! [Thematic try: 1.Bc6? Bh7! 2.Kf6 Kf4! 3.Kg7 Bf5! zz (3...Bc2? 4.Nf3! as the main line) 4.Bd7 Bc2! (4...Bd3? 5.Be6! Nb5 6.Bc4!+-) 5.Be8 Nd5! 6.Bg6 Bxg6 7.Kxg6 Ne7+ 8.Kf7 Kg5! 9.h7 Ng6 10.Kg7 d3 11.Nf3+ Kf5 12.Nh4+! Ke4! 13.Nf3 Kf5 14.Ne5! d2! 15.Nc4 d1N! 16.Ne5 Nxe5 17.h8Q Ne3! 18.Qh7+ Kf4!=; 1.Ne4+? Kh4! 2.Kf6 Bh7 3.Nd2 d3! 4.Bc6 Ne2! 5.Kg7 Bf5=] 1...Bh7 2.Kg7! [2.Bc6? Kf4! 3.Kg7 Bf5!= zz; 2.Bf3? Kf4! 3.Kg7 Bc2 4.Bc6 Bf5!= zz] 2...Bf5! [2...Bc2 3.Ne4+ Bxe4 4.Bxe4 Nxe4 5.h7+-] 3.Bf3! zz [3.Bc6? Kf4!= zz] 3...Kf4! [3...d3 4.Bc6 Kf2 5.Bd7! Bxd7 6.h7+-] 4.Bc6! zz Bc2! 5.Nf3! [5.Be8? Nd5!= as the thematic try] 5...Ne2! 6.Ne1! [6.Ba4? Be4! 7.Bc6 Kxf3! 8.Bxe4+ Kxe4 9.h7 d3 10.h8Q d2=] 6...Bf5! 7.Be8 Ng3 [7...d3 8.Nxd3+ Kg5 9.Ne5! Nd4 10.Nf7+ Kg4 11.Nd8 Bc2 12.Kf6! Bh7 13.Nf7 Kh5 14.Ne5+ Kxh6 15.Ng4#] 8.Bg6 d3! 9.Nxd3+ Kg5 10.h7 Nh5+ 11.Kf8! Bxg6 12.h8Q+-