Ser-h#10 Transmuting Kings

Sol.

  1.Kh4-g5 2.Kg5-f6 3.Kf6-e5 4.Ke5-d6 5.Kd6-c5 6.Kc5-c4 7.Kc4*c3 8.Kc3-d2 9.Kd2-e1 10.Ke1-f1 Bf5-d3 #