Cappelletti/Hamilton -------------------- 2C = one-suited hand (6+ carder suit). Partner (advancer) usually bids 2D which asks for the suit; however, partner may pass with long clubs or bid their own long major. 2D = both majors. Advancer usually bids their longer major. 2H = hearts and a minor. Advancer can bid 2N to learn the minor. 2S = spades and a minor. Advancer can bid 2N to learn the minor. 2N = both minors. X = penalty. The main good point about this convention is that it retains the penalty double. Many people like to play this convention only over weak no trumpers, since they believe that it is either 1) hard to penalize a strong no trump or 2) better to disturb the strong no trump opening. One major problem that occurs when people decide to play this convention is: What to do if they compete over 2C thru 2N? 1. One solution over a double is to try to let pass ask for the suit or longer suit, redouble is to play, and others are natural (except for 2H and 2S where you can simply pass to play in that suit). 1N (2C) x -- redouble is to play -- pass asks for the suit -- all others are natural (including 2D) 1N (2D) x -- redouble is to play -- pass asks for the longer major -- a bid of a major shows a definite preference 1N (2H/2S) x -- pass is to play -- redouble asks for the minor 1N (2N) x -- pass asks for the longer minor 2. If responder bids over the overcall, you can play that if you know all of overcaller's suits, a double is penalty; but if you don't know his suits, a double asks for more info. 1N (2C) any -- double asks for the suit 1N (2D) any -- double is penalty -- major suit bids are non-forcing, competitive 1N (2H/2S) any -- double asks for the minor 1N (2N) any -- double is penalty