Correct answer: Bb71...B:b6 2.Rc8# 1...Bb7 2.R6:b7# 1...Bd5 2.N:d5# 1.B:b5?? (2.Na6#) 1...Bb7 2.R6:b7# but 1...B:b8! 1.Nc5?? (2.Ne6#)
