Correct answer: Bg51...Ka6 2.Ra4# 1...f6/f5 2.R:a7# 1.R:f7?? (2.R:a7#) 1...Ka6 2.Ra4# but 1...a6! 1.Be1?? zz 1...Ka6 2.Ra4# 1...f6/f5 2.R:a7#
