1...Ra7+ 2.Qxa7#, 1...Rxf3+ 2.Bxf3#

[1.Bd6? ~ 1...Ra7+!; 1.Bc8?; 1.Bd7? Rxf3+]

Solution: 1.Bc7! (2.Qb8#)

1...Rxf3+ 2.Bxf3#,

1...Rb3 2.Qa6#. Author