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Morton's Fork is a coup in contract bridge that forces an opponent to choose between: #letting declarer establish extra tricks in the suit led; or #losing the opportunity to win any trick in the suit led. It takes its name from the expression Morton's Fork.〔Frey et al. (1976). ''The Official Encyclopedia of Bridge'', p. 295. ISBN 0-517-52724-3.〕 ==Example== It appears that South has both a heart and a club loser. Although South can establish another winner in diamonds, just one discard on a diamond honor doesn't help. South receives the lead of the J against 6. However, there are two ways that the contract can be made. South might manage to avoid any heart loser. Or, South might take two heart tricks; in that case, South could discard one club on the K and another club on a diamond honor. Judging from the opening lead that East holds the A, South plays the 9 from dummy at the first trick, ruffs in hand, and draws trumps. Hoping that West holds the A, South leads the 7, executing Morton's Fork: Note that declarer must be careful ''not'' to play a high diamond on the opening lead, as East could then withhold the ace. That would force the declarer to choose a discard prematurely. South must get a discard on a diamond honor eventually, but not before West has been forced to decide whether to take the A or duck it. Only then will South know whether to discard a heart or a club on the diamond winner. 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「Morton's fork coup」の詳細全文を読む スポンサード リンク
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