M J Bridge
Theory and Conventions
Opponents opened 1NT
Clearly your choice now will depend on the agreed method for the original overcall.
Your original overcall will have been made within the context of the partnership’s agreed methods taking into account the strength of the opponents’ no trump and the vulnerability.
You will be unlikely to have much choice at this point in the auction. In general partner’s response will either end the bidding by your side, or will demand one of a specific set of responses.
Beginner and above
Advancer’s first bid