Editing Duplicate bridge (section)

{{Short description|Variant of contract bridge card game}}
{{Infobox card game
| title         = Duplicate Bridge
| subtitle      =
| image_link    = Bridge-Großschlemm.JPG
| image_size    = 320px
| image_caption = Bridge declarer play in a duplicate tournament
| alt_names     = Tournament bridge
| type          = Trick-taking
| players       = 8 or more <!-- 2 tables or more -->
| play          = Clockwise
| card_rank     = A K Q J 10 9 8 7 6 5 4 3 2
| ages          =
| num_cards     = 52
| deck          = [[French deck|French]]
| origin        =
| related       = [[Contract bridge]]
| playing_time  = [[World Bridge Federation|WBF]] tournament games = 7.5 minutes per deal
| random_chance = Very Low
| skills        = [[Memory]], [[wikt:tactics|tactics]], [[probability]], [[communication]]
| footnotes     =
}}

'''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 the element of skill is heightened while that of chance is reduced. This stands in contrast to Bridge played without duplication, where each hand is freshly dealt and where scores may be more affected by chance in the short run.

Four-way card holders known as [[Board (bridge)|bridge boards]] are used to enable each player's hand to be preserved from table to table, and final scores are calculated by comparing each pair's result with others who played the same hand. 

In duplicate bridge, players normally play all the hands with the same partner, and compete either as a partnership (in a 'Pairs tournament') or on a team with one or more other partnerships ('Teams tournament' - players are usually allowed to change partner within their team at any point if they wish). 'Individual tournaments' also exist, in which players change partnerships regularly during the tournament and are ranked on their personal performance.