Correct answer: Nde41...Re4 2.d:c4#/d:e4# 1...R:f4/b4 2.d:c4# 1...N:d3/Nd7/Nb3/Nb7/Na4/Na6 2.Re5#/Re4#/Re3#/Re2#/Re1#/Re7#/Re8# 1...N