What are 2nd doubles in Bridge after making an initial takeout double ?  Why make a takeout double twice ? The 2Nd double should be D.S.I.P.  showing lots of HCP’s and no clear cut action . It does not mean a trump stack as the frequency does not justify that bid. . A Q bid or jumping in a suit shows other types of strong hands. Here is a hand from the Cavendish submitted by Stan Cabay

 

Bob, for your arsenal on DSIP's

 

Cavendish 2004 Miller/Wold vs Hamman/Zia Both Vul

 

            Miller

            AK7653

            AJ98  

            Q10

            4

 

Zia                            Hamman

10942                        QJ

63                              KQ102

K75                           A642

10972                        AK3

 

            Wold                  

            8                         

            754                     

            J983                     

            QJ853                 

 

P(Wold)-P-1-D

P-2♣-2-D

P-?

 

 

In my opinion, the 2nd dble by Hamman is DSIP showing a "flat" 19+ hand  with less than 4 clubs. Zia can pass and collect 500 or 800

. He actually bid 3♣  and collected -300 when mercifully Wold passed. Strange, from a player like Zia, who is known for saying that there aren't enough doubles in IMP's

 

. For the  Cavendish, as much as about 60*25 = 1500 imps swung on this single DSIP hand. The current half-time leaders have some 1900 imps in total.

 

Stan