Correct answer: Ra31...K:d3 2.O-O-O# 1...e2/e:d3 2.Ra4# 1...c:b6/c6/c5 2.Qd6# 1.Rca2?? zz 1...K:d3 2.Rd1#/O-O-O# 1...e2/e:d3 2.Ra4# 1...c:b6/c6/c5 2.Qd6# but 1...c2!
