Correct answer: f71...Rc6 2.Ke7#/Kf7# 1...Rd7/Nd7 2.e:d7# 1...Re7+ 2.K:e7# 1...Rf7 2.K:f7# 1...Nd3/Ne4/N:e6/Nb3/Na4/Na6 2.d7# 1.R