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  2. Rule of 11 - Wikipedia

    en.wikipedia.org/wiki/Rule_of_11

    In contract bridge, the Rule of 11 is applied when the opening lead is the fourth best from the defender's suit. [1] By subtracting the rank of the card led from 11, the partner of the opening leader can determine how many cards higher than the card led are held by declarer, dummy and himself; by deduction of those in dummy and in his own hand, he can determine the number in declarer's hand.

  3. Duplicate bridge - Wikipedia

    en.wikipedia.org/wiki/Duplicate_bridge

    Duplicate bridge is a variation of contract bridge where the same set of bridge deals (i.e., the distribution of the 52 cards among the four hands) are played by different competitors, and scoring is based on relative performance. In this way, every hand, whether strong or weak, is played in competition with others playing identical cards, and ...

  4. Laws of Duplicate Bridge - Wikipedia

    en.wikipedia.org/wiki/Laws_of_Duplicate_Bridge

    The first Laws of Duplicate Contract Bridge were published in 1928. [1] They were revised in 1933, 1935, 1943, 1949, 1963, 1975, 1987, 1997, 2007 and 2017. [2] The Laws are effective worldwide for all duplicate bridge tournaments sponsored by WBF, zonal, national and subordinate organizations (which includes most bridge clubs).

  5. Opening lead - Wikipedia

    en.wikipedia.org/wiki/Opening_lead

    long suit (four cards or more) leads: from a sequence of honours lead the highest, thus from KQJx lead the K; from a suit containing an internal sequence lead the top of that sequence, thus from KJ109 lead the J; from a suit headed by an honour, defender generally leads the fourth best card, allowing partner to employ the Rule of 11

  6. Traveling scoreslip - Wikipedia

    en.wikipedia.org/wiki/Traveling_scoreslip

    A traveling scoreslip (also called a traveler) is a form used for recording the results of each deal in a duplicate bridge tournament. [1] In these tournaments, the four hands of each deal are placed into a board so that the same deal can be played by different competitors. Each time the deal (or board) is played, the result is entered into the ...

  7. 2/1 game forcing - Wikipedia

    en.wikipedia.org/wiki/2/1_game_forcing

    Shows 10-11 points without support for spades. 1 ♠ – 1NT; 2 ♣ – 3 ♠ Shows 10-11 points with 3-card support for spades. 1 ♠ – 3 ♠ Shows 10-11 points with at least 4-card support for spades. 1 ♠ – 1NT; 2 ♣ – 3 ♥ Shows 10-11 points with a long heart suit. 1 ♦ – 2 ♥ This is a jump response, and there are different ...

  8. Card reading (bridge) - Wikipedia

    en.wikipedia.org/wiki/Card_reading_(Bridge)

    For example, 5-3 and 4-4 are among the most common trump distributions on the declarer and dummy's hands. In cases, if an opponent shows out on the second trump round, then 5-3-1 or 4-4-1 is known, and the pattern 5-3-4-1 or 4-4-4-1 comes up automatically, and the other defender is known to have begun with four. Counting as a defender

  9. Flannery - Wikipedia

    en.wikipedia.org/wiki/Flannery

    Flannery is a bridge convention using a 2 ♦ opening bid to show a hand of minimal opening bid strength (11-15 high card points) with exactly four spades and five (or sometimes six) hearts. It was invented by American player William (Bill) L. Flannery .