Correct answer: Ng61.Qg3?? (2.Qg8#/Qb8#) 1...f:e6 2.Qg6#/Qg8# but 1...f6! 1.Qf3?? (2.Q:f7#/B:f7#) 1...f1Q/f1R 2.B:f7# 1...f:e6 2.Qf8#/Qh5
