1.Sb3+? (A) Ke4!
1.Be3+? (B) Ke5!
1.Kh2!? Ra1!

1.Kf1!! – 2.Ke2! ~ 3.Rd3#
1...Rb6 2.Sa5! – 3.Saxb3#(2.Ke2? Rxb7! 3.Rd3 Kc5!)
  2...Kc5 3.Sdxb3# (A) (3...Kb6??)
1...Sd6 2.Sd8! - 3.Se6# (2.Ke2? Sxb7! 3.Rd3 Kc5!)
  2...Kc5 3.Be3# (B) (3...Kd6??)
1...f5 2.Sxb3+ (A)+ Kxc4 3.Be2#
  2...Kxe4 3.S7c5#
1...e5 2.Be3+ (B) Kd3 3.Sc5#