Correct answer: Nd61.Nd6! (2.Re4#/Nf5#/Nb5#/Rc4#/Rd5#) 1...c:d6 2.Re4# 1...Rd2/Rd1/Rc3/Re3/Rf3/Rg3/Rh3/N:a3 2.Rd5# 1...N