In playing games, 50 points are added to the score of the winning side.
If the make is passed to dummy, four aces or three aces constitute a compulsory “no-trump” declaration; otherwise, dummy must declare the longest suit.
When there are two suits of equal length, dummy must select the suit, which counts most by spots, the ace counting eleven and the other honours ten each. If the suits are still equal, dummy declares the one having the higher trick valuation.
Only one adversary, the leader, can double.
If the dealer has seen the two hands, he is not allowed to redouble.
The dummy hand is not exposed until the doubling has been settled and a card led.
When the dummy is the leader, his partner must look at the dummy hand and lead from it before seeing his own cards; and dummy alone has the right to double.
There are various methods of playing Dummy Bridge. An approved feature is to allow either adversary to double the dealer’s make and to eliminate doubling on a forced make.