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Chicago, also known as Four-deal Bridge and Short Bridge,〔Goren, (1961), p.172.〕 is a form of contract bridge and a variation of rubber bridge〔Frey et al (1967), pp.61-62.〕 in which one or more sets of four deals are played and scored. ==Origins and distinctions== Getting its name from the Standard Club of Chicago where it originated in the early 1960s,〔〔Francis et al (2001), p.188〕 the game is well suited to club and home play.〔Francis et al (2001), pp.71-72〕 While the auction and the play of the hand are the same as in rubber bridge, Chicago has the following unique features: * A rubber consists of exactly four deals. If a deal is passed out, the same player deals again and the deal passed out does not count as one of the four deals.〔 * The duration of a set of four deals is likely to be more consistent (typically about twenty minutes) than in rubber bridge where part-score contracts, defeated contracts and three-game rubbers can extend the time of play unpredictably - an attractive feature where limited time is available. * It enables four to seven players to participate by various methods of partnership rotation after each set of four deals.〔 * Vulnerability is predetermined for each deal. On the first deal, neither side is vulnerable; on the second and third deals, only the dealer's side is vulnerable;〔Some make the dealer's side not vulnerable and the opposition vulnerable on the second and third deals.〕 and on the fourth deal, both sides are vulnerable. * While the basic elements of scoring are similar to rubber bridge, their method of accumulation and recording differ slightly. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Chicago (bridge card game)」の詳細全文を読む スポンサード リンク
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