1.Sd2-c4 !

1...Kf4-e4 2.Kh5-h4 

(2...Ke4-f4 3.Rd6-d4 #)

2...f5-f4 3.Kh4-g4 f6-f5 + 4.Kg4-h5 f7-f6 5.Sc4-a3 Ke4-e5 6.Sa3-b5 Ke5-e4 

7.Kh5-g6 Ke4-e5 8.Kg6-f7 Ke5-e4 9.Sb5-c3 + Ke4-e5 10.Rd6-d5 #