Tactic 0213

[Event "ICC Blitz"]
[White "serspb"]
[Black "jbennett"]
[Result "*"]
[Annotator "JB"]
[SetUp "1"]
[FEN "2rr2k1/p4p2/4q3/6p1/PpNpPpPn/1P3P2/2P2Q2/2KRR3 b - - 0 30"]

{Black to move, white just played Rhe1. }
{Second best is Rc6 (0.02), best is Rxc4 (-1.81) }
1... Rxc4 {This exchange sacrifice exposes blacks king and weakens }
{his pawns on the queenside. }
2. bxc4 Qxc4 {It also supports black's d4 pawn, which was hanging. }
3. Rd3 Qa2
4. Kd2 Qxa4
5. Rd1 Rc8
*