Double Barrelled Stayman
Over 1NT, 2
and 2
ask opener for a four card major.
2
is not forcing to game. 2
is game-forcing.
Over 2,
Opener rebids
- 2
or 2
to show four - 2NT with 4-4 in the minors
- 3,
3,
3,
and 3 to show 5 of that suit
- 3NT with exactly 4333 with 4 in a minor
This convention is used in Precision Club