The scrambling 2NT bid is used after partner makes a takeout double at the two level, and you hold two four card suits. E.g. (1)-p-(2)-x; p- ??? and you hold: : Kxx : Qxxx : Jxxx : xx. If you bid hearts, you could wind up in a 4-3 fit (and the same with bidding diamonds). Why guess? If you bid 2NT as a scramble, partner can bid his four card suits up the line. With : xx : Kxxx : AKx : QJxx , partner bids 3 over which you bid 3 to deny holding four clubs and then partner bids 3 to show that suit. Why play this convention?
- First, you and your partner may make more aggressive doubles knowing that you can find your 4-4 fits safely.
- Second, if partner does not go thru Scrambling 2NT, then the doubler will know that the suit is a five card or longer suit.
- Third, what else is 2NT supposed to mean? Natural? Why not just pass their doubled bid then?