Correct answer: Qf41...Nc7/Nd4 2.N:c7# 1...Nb:d6 2.Nc7#/R:d6# 1...Bd4/Bb2/Ba1/Bb4 2.Nb4# 1...B:e5+ 2.R:e5# 1...Ng5/Nh6/Nh8/N