Odds
Suit break odds
The a priori odds of every suit break in bridge, from two to eight missing cards: 3-2 at 67.8 percent, 4-1 at 28.3, and the rest, with how to read them at the table.
Finesse or drop
Whether to finesse for a missing queen or play for the drop, with the exact odds by number of cards held: 53 percent for the drop with nine, 33 with eight, against a 50 percent finesse.
Hand patterns
Every one of the 39 bridge hand patterns and how often each is dealt: 4-4-3-2 leads at 21.6 percent, balanced hands make up 47.6 percent, and a void appears in one hand in twenty.
High-card points
How often a bridge hand holds each number of high-card points: 10 is the commonest at 9.4 percent, the average is exactly 10, and 15 or more comes up one deal in seven.
Game and slam odds
The chance of success you need before bidding a game or slam pays at IMPs, not vulnerable and vulnerable: 45 and 37.5 percent for game, 50 for a small slam, about 56 for a grand.