Question: What should the bidding sequence be in the case of interference over 2C?
Supposed the bidding went 2♣ (2♥) ?
Answer: A common method (what I play) is to play a Pass shows values and a Double show a bust hand (less than 2 Queens). Bidding would be the same as when bidding a natural long suit** The theory behind playing Double showing a bust hand is that when partner has a balanced 22+ HCP hand, then partner can judge to actually pass your double and defend the overcall assuming that your side doesn’t have game. The Pass acts as the “waiting 2♦” bid and allows partner to double for penalties, bid notrump or show a long suit.
To summarize:
2♣ (2♥) Double = Bust Hand
2♣ (2♥) Pass = Positive Hand
2♣ (2♥) Bid = Long, Strong Suit
**(7+ card suit with 3 of the top 5 honors ~ remember we don’t want to take up room from partner telling us whether they are point and balanced or tricks and unbalanced).
