Correct answer: Q:b61...b5 2.Qd4# 1...Nc5 2.Nf7# 1...N:d6 2.Qe7#/Re6# 1...Nd8 2.Re4# 1.Q:b7?? (2.Nf7#/Qe7#/Re6#/Re4#) 1...R:a8 2.N