Tactic 0166

[Event "ICC Blitz"]
[White "optional"]
[Black "jbennett"]
[Result "*"]
[Annotator "JB"]
[SetUp "1"]
[FEN "r4rk1/p1BN1ppp/5b2/8/6b1/2p5/PP3PPP/RN2R1K1 b - - 0 20"]

{Black to move, white just played Nd7. }
{Second best is Bxd7 (0.58), best is cxb2 (-1.80) }
1... cxb2
2. Nxf6+ gxf6
3. Nd2 bxa1Q
4. Rxa1
*