1...c5*b4 2.Rd8-c8 + 2...Se8-c7 3.Rc8*c7 #
1.Bb4-a5 ! threat: 2.Sc2-e3 + {B} 2...Qf4*e3 3.Sd3*e5 # {D} 2.Sc2*a3 + {A} 2...Ra2*a3 3.Sd3-b2 # {C} 1...Ra2*c2 2.Rd2*c2 + 2...Be1-c3 3.Rc2*c3 # 1...Ra2-b2 + 2.Sd3*b2 + {C} 2...a3*b2 3.Sc2-a3 # {A} 1...Se8-d6 2.Sd3*e5 + {D} 2...Qf4*e5 3.Sc2-e3 # {B}