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Contract bridge probabilities. In the game of bridge mathematical probabilities play a significant role. Different declarer play strategies lead to success depending on the distribution of opponent's cards. To decide which strategy has highest likelihood of success, the declarer needs to have at least an elementary knowledge of probabilities.
Law of total tricks. In contract bridge, the Law of total tricks (abbreviated here as LoTT) is a guideline used to help determine how high to bid in a competitive auction. It is not really a law (because counterexamples are easy to find) but a method of hand evaluation which describes a relationship that seems to exist somewhat regularly.
Vacant Places. In the card game bridge, the law or principle of vacant places is a simple method for estimating the probable location of any particular card in the two unseen hands. It can be used both to aid in a decision at the table and to derive the entire suit division probability table. At the beginning of a deal, each of four hands ...
The difference in percentages is so close (the Bridge Encyclopedia states that the finesse is a 50% probability of success holding 8 cards, while the drop has a 53% holding 9 cards) that the slightest inference might influence a player to choose to finesse or to drop with nine cards.
Rubber Bridge Scoring Above the line In rubber bridge, the location on the scorepad above the main horizontal line where extra points are entered; extra points are those awarded for holding honor cards in trumps, for bonuses for scoring game, small slam, grand slam or winning a rubber, for overtricks on the declaring side and for undertricks on the defending side and for fulfilling doubled or ...
Contract bridge. Contract bridge, or simply bridge, is a plain trick-taking card game played with a standard 52-card deck. It is played by two pairs competing against each other, with the partners facing each other as in Whist . Millions of people play bridge worldwide in clubs, tournaments, online and socially, making it one of the world's ...
Principle of restricted choice. The principle of restricted choice is a guideline used in card games such as contract bridge to intuit hidden information. It may be stated as "The play of a card which may have been selected as a choice of equal plays increases the chance that the player started with a holding in which his choice was restricted ...
In the card game contract bridge, the Losing-Trick Count (LTC) is a method of hand evaluation that is generally only considered suitable to be used in situations where a trump suit has been established and when shape and fit are more significant than high card points (HCP) in determining the optimum level of the contract.