Correct answer: Nc51...Nb2/Nab6/Nc3/Nc5 2.Qc3# 1.Bb2+?? 1...N:b2 2.Qc3# 1...Nc3 2.Q:c3#/B:c3# but 1...R:b2! 1.Nf8?? (2.Qe6#)
