Correct answer: Nd11...Nc7 2.N:c7# 1...N:f7 2.B:f7# 1...b5 2.Rc5# 1...g3 2.Bf3# 1...g6/g5 2.N:f6# 1.B:g4?? (2.Bf3#) but 1...f:g4! 1.Na4?? zz 1...b5 2.R<