1.b4! Bh5+

1…Bxb4 2.c4 Bh5+ 3.Kg2!

2.Ke3 Bxb4

3.Bc6 Bc5+

4.Kd3 b4

5.Kc4 Be7

6.c3 Be2+

7.Kb3 Bd1+

8.Kb2 Bf6

9.Kc1 – =.