A maximal double is a form of game try used in competitive auction. It applies to situations when:
- we have found a fit;
- the opponents have taken away the bid immediately below our 3-level suit.
- the partner has not denied invitational values.
If it is in effect, the following double is a maximal double:
Note that, if there is a space between the opponent's suit and 3 of our suit, maximal doubles are off and the space used is the general game try: