This convention is alertable.
Brozel is a system of defence to 1NT opening.
- X: one-suited hand with at least 6 cards in the long suit, puppet to 2♣;
- partner is allowed to pass with side suits adequately stopped.
- 2♣/2♦: ♥s and the named minor;
- 2♥: both majors;
- 2♠: ♠s and a minor;
- 2NT: asks for minor
- 2NT: both minors;
- 3 of a suit: three-suited, with shortness in the named suit.
The two-suited bids are non-forcing. After making a two or three-suited bid, overcaller would generally pass after a correct.
To show a strong hand, make a double then a jump, regardless of the shape, since a two-suited bid can be passed and a three-suited bid would take the auction to the 4-level.