Correct answer: b41.Nb3?? (2.Nc3#/Rd6#) 1...Rc8/c1Q/c1R 2.Rd6# 1...R:b8/d6 2.Nc3# 1...N:f4+ 2.N:f4# 1...a:b3 2.R1a5# but 1...c1N+! 1
