1.Bh4!

[1.Kf6? Kd6! 2.Kg7 Kd5 3.Kxh7 Bf5 4.Kg7 Kc4 5.Bd2 Kb3-+]

1...Ke8!

[1...h6 2.Bf6! g5 3.Bg7 h5 4.Bf6 g4 5.Bh4=;

 1...c5 2.bxc5 Kc6 3.Kd4=]

2.Kf6!

[2.Kd6? Kf7! 3.Bg5 Bg4 4.Kxc6 Ke6 5.Kc5 Kf5-+]

2...Bf5 3.Bg5 Kd7 4.Ke5 Bc2 5.Bh4 h6 6.Bf6! g5 

7.Bg7 h5 8.Bf6 g4

[8...h4 9.Bxg5 h3 10.Bf4=]

9.Bh4=