Correct answer: O-O1...N:b3 2.R:c2# 1...N:e3 2.B:e3# 1...N:f2 2.K:f2# 1...Nc3 2.b:c3# 1...N:b2 2.O-O# 1.Bg3?? zz 1...N:b3 2.R:c2# 1...Nf2 2.