Preliminaries
Duplicate Contract Bridge is played with a pack of 52 cards, consisting
of 13 cards in each of four suits. The suits rank downward in the order
Spades (
),
Hearts (
),
Diamonds (
),
Clubs (
).
The cards of each suit rank downward in the order Ace, King, Queen, Jack,
10, 9, 8, 7, 6, 5,4, 3, 2.