Correct answer: Rd41.Rf2?? zz 1...c4 2.Rf5# but 1...c:b4! 1.d4?? (2.d:c5#) 1...c:b4 2.d5# 1...c:d4 2.B:d4# but 1...c4! 1.Ba6?? zz 1...b:a6 2.Q:a6# but 1...Ka7! 1.N<