1.Re8 (E)? threat 2.Qf5 (A)

2. Qd3 (B)

2. Qg1 (C)

2. Qg2 (D) and 3.Qg6#

but 1... B:f6 (a)!

1. Qf5 (A)? threat 2.Re8 (E) and 3.Qg6# 1... Ke7!

1. Qd3 (B)? threat 2.Re8 (E) and 3.Qg6# 1... K:f6!

1. Qg1 (C)? threat 2.Re8 (E) and 3.Qg6# 1... B:f6! 

1. Qg2 (D)? threat 2.Re8 (E) and 3.Qg6# 1... Ke6/Ke7!

1. Rd8!  threat 2.Rd7+

1... B:f6 (a) 2.Qf5! (A) zz. Ke7, Kg7 3.Qd7, Qg6#

1... Ke6 2. Rd7 ~ 3.Qf5 (A)#

1... Ke7 2. Rd7+ Ke6, Kf8 3.Qf5, Sg6#

1... Kg7 2. Rd7+ Kf8, Kh6 3.Sg6, Qf4#