Responsive Double

A double by advancer, after overcall has bid, and after responder has raised opener's suit, is responsive, and shows the unbid suits. It is used ONLY after opponents have found a suit fit. Otherwise, the second double is for penalty.

             S: KQJx
             H: AJTx
             D: x
             C: K9xx

             S: Axxx
             H: Qxxx
             D: xx
             C: JTx

W        N       E        S

1C       X       2C       X
3C       4H      P/O