*1...f4 2.Sf3#, *1...Sc6 2.Sc6#
1.Sf3#? Kf4!
1.exf5? – 2.Sf3# (1...Kf4??), 1...Bxd4 2.Qxd4#, 1...d5!
1.Sd~? – 2.Qxc3# (A), 1...d5 2.Qxc7# (1...Kxe4??), 1...B~ 2.Qd4#, 1...Sc6!
1.Sxe6? - 2.Qd5# (B), 1...fxe6 2.Qxc3# (A), 1...c6!

1.Sd5! - 2.Sf3# (2.Bf6#?)
1...Kxe4 2.Qe2#
1...exd5 2.Qxd5# (B)
1...fxe4 2.Bf6#
1...Bxd4 2.Qxd4#