Weak 2 Bids
These openings show 6-10 HCP a 6-card suit and are designed to obstruct your opponents.
- less than an opening hand
- good 6-card suit
- 2 honours in the suit
2♦, 2♥, 2♠ Openings
Suit quality is important. A good rule of thumb is that you should have 2 of the top 4 honours. Intermediate cards are also important. KQ10975 is better than KQ5432. Having opened a weak 2, you should not bid again unless partner makes a forcing bid. Partner has enough information to know what to do.
This is the perfect hand to open 2♠. You hope to make it difficult for your opponents to find their likely heart fit.
This is too strong to open 2♠. Just start at the 1-level.
Responding to to a Weak 2 Opening
A weak 2 opening shows less than an opening hand so responder needs a good hand, or good trump support, to enter the auction.
With 3-card trump support it's worthwhile raising partner, even with a weak hand, to make it harder for opponents to know what to do.
A perfect raise which South makes purely to be a nuisance. With four card support South could even bid game.
Weak 2 Opening with a 5 card suit
A weak 2 opening normally shows a 6 card suit but sometimes under the right circumstances a 5 card suit is enough.