When the game is played by three persons, the cards are cut to decide
which shall have the dummy; the one cutting the lowest card has the
deal and a permanent dummy during the game or the rubber, as the case
may be. It is then customary for each player to have dummy in turn,
during one game or rubber.
In playing rubbers, 100 points are added to the score of the winning
side.
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.