1.Bg3-f4 ! ---2.Bf4:e3 #1...Bf6-g5

2.Bf4-e5 +2...Kd4-c5 3.Be5:c7 +3...Kc5-d4

4.Bc7-b6 +4...Ra6:b6 5.Sd2*b3 +( A ) 

5...Rb6:b3 6.Sd8-e6 # ( B )

4...Qb8*b6 5.Sd8-e6 +( B ) 5...Qb6:e6 6.Sd2*b3 #( A )

(4...Sc8:b6 5.Sd8-e6 # 5.Sd2:b3 #

3...Rd7-d5 4.Rf5:d5 #)