Correct answer: Ke41...Kb1 2.Qf1# 1.Qf2?? zz 1...Kb1 2.Qf1#/Qg1#/Qe1# 1...b1R 2.Qa2# 1...b1B 2.Nb3# 1...b1N 2.Nb3#/Qa2# but 1