Correct answer: Rd11...N:d2 2.K:d2# 1...Na3 2.O-O-O# 1...R:c2/Rb3/Ra3 2.Qg7# 1...d:c2 2.Ne2# 1.Nd6?? zz 1...Na3 2.O-O-O# 1...R:c2/Rb3/Ra3
