Correct answer: Nb51...Rd8/Ra7 2.Qa7# 1...b:c3/b3 2.Qa4# 1.Ncd1?? (2.Nc4#/Nd3#/Na4#) 1...Rc7+ 2.Nc4# 1...b3 2.Qa4# but 1...R:d5! 1.Ne2?
