Correct answer: Ra71...N:c6/Na6 2.Rd8# 1.Bb5?? zz 1...N:c6/Na6 2.Rd8# but 1...a4! 1.Ke3?? zz 1...N:c6/Na6 2.Rd8# but 1...e4! 1.K:e5?? (2.