Correct answer: Na41...Nd1/Nd3/Na4 2.c4# 1...Rd8 2.R:d8# 1.Nd7?? (2.Nf6#/Nb6#/Nb4#) 1...N:b3 2.Nb6# 1...N:c2 2.Nf6#/Nb6# 1...N<