Cappelletti (also called Hamilton and Pottage) is a bridge bidding convention for the card game contract bridge, primarily used to interfere over opponent's one notrump (1NT) opening.

Is Cappelletti Alertable in bridge?

It is designed to allow any one- or major two-suited overcall of a 1NT opening. It is one of many conventions for interfering over opponents' 1NT opening. This convention is alertable.

What is Meckwell in bridge?

Meckwell is a method for defending against an opposing strong one notrump (1NT) opening by intervening in the direct and passout seats. It features the following calls: Call. Meaning. Double.