1.Lc4 - 2.Le2 3.Bxg4#  but 1.Bc4? - pat,

1.Le6!

1…de6 2.Sg4 Kg4 3.Kg2 h5 4.d7 h4 5.d8D h3+ 6.Kf2 h2 7.Dd1 Kh3 8.Kf3 g4 9.Kf2 g5 10.Df1#

9... h1D h1S 10.Dh1#

6... Kh5 7.Dh8 Kg4 8.De5 h2 9.De6 Kh5 10.Dh3#

8... Kh5 9.Kf3 - 10.Dh8#