Correct answer: Qc31...Ng1/Ng3/Nd4/Nc1/Nc3+ 2.Nc3# 1...a4 2.Nb4# 1.Qe3?? zz 1...N:f4/Ng1/Ng3/Nd4/Nc1 2.Qd4#/Nc3# 1...Nc3+
