Correct answer: Re21.N:f6+?? 1...Ke7 2.Ng8#/Nd5# but 1...Kf8! 1.Re2! (2.Bd4#/Bc5#/Bb6#/B:a7#) 1...d5/Qc5 2.Bc5# 1...Q:d7 2.Bh6#
