Correct answer: Ne21...Nb3+ 2.c:b3# 1.Qe7?? (2.Q:a3#/R:a3#) 1...Nb3+ 2.c:b3# but 1...Bd3! 1.Q:e4?? (2.Ne2#/Ne6#/Nf3#/Nb3#/Nb5#) 1...b5 2.N