Correct answer: f41...Kc5 2.Qe5# 1...Nc4 2.Nab3# 1...Nd3 2.Ncb3#/Qe3# 1...Rc4 2.Nab3#/Qe3# 1...Rc5/Rc7/Rc8/Re3 2.Qe3# 1.Ncb3+
