Tactic 0140

[Event "ICC Blitz"]
[White "jbennett"]
[Black "julioedisonmc"]
[Result "*"]
[Annotator "JB"]
[SetUp "1"]
[FEN "5r2/2k3p1/R5B1/pp2P2P/8/1P6/PKP5/4r3 b - - 0 36"]

{Black to move, white just played Ra6. }
{Second best is Kb7 (0.04), best is b4 (-0.53) }
1... b4
2. Rxa5 Rff1 {Threatening mate. }
3. c3 Re2+
4. Bc2 bxc3+
5. Kxc3 Rc1
6. Rc5+ Kb6
7. Kb2 Rh1
8. b4 Rxh5
*