Correct answer: B:d41...c5 2.Nd6# 1...Bb6/Bc7/Bd8 2.R:b4# 1...Nc2 2.Nf4#/Ng1#/Ng3#/N:d4#/Nc1# 1...Nd3/Na6 2.R:d4# 1.a4?? (2.R:d4#)