Correct answer: Nh51...g5 2.f5# 1...Nd2 2.B:d5#/Bc5#/Bb4#/Ba3# 1...N:d6/Nce3+ 2.Re3# 1...Ne5 2.B:d5# 1...Nb2 2.B:d5#/Re3#/Bc5#/Bb4#/B<