Correct answer: Na51...Be6/B:c4 2.Q:d4# 1...Bd6/Ba7/Rc7 2.Q:d6# 1.a4?? (2.Bb4#) but 1...d3! 1.Nfd6?? (2.Bb4#) 1...Be6/B:c4 2.N:e4# 1...
