Correct answer: Rb1+1...c3 2.Nc5# 1.Kc5?? zz 1...K:a4 2.R:a3# but 1...c3! 1.Rc2?? (2.Rc3#) but 1...K:c2! 1.Rd2?? (2.Rb1#) but 1...a2! 1.Re2?? (2.R