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A triple squeeze is a squeeze against one player, in three suits; a more explicit definition is "three simple squeezes against the same player." It is often equated with "progressive squeeze" (also termed a "repeating squeeze"), but progressive squeezes are a subset of triple squeezes. A progressive squeeze is a triple squeeze that, depending both on entries and on positional factors, may result in a subsequent, simple, two-suit squeeze that takes place against the opponent who has just been triple squeezed. Confusing the issue is that some triple squeezes can become progressive squeezes through misdefense. ==Example: Triple squeeze with potential misdefense== Here is an example of a triple squeeze that should not become progressive: South, pushed to 5 by the nonvulnerable opponents, ruffs the second diamond lead and runs hearts to reach this position: South cannot be prevented from winning six more tricks, and if West isn't careful South will win all seven. When South leads his last heart, West is triple-squeezed and ''must'' discard the Q to stop the overtrick. Now South discards dummy's 2 and crosses to the A. Dummy's 9 is cashed, South discards the 5, and West lets go the 10. South can now cash two clubs and a spade but must give up either a spade or a club at the end. If West discarded from a black suit when South cashed the final heart, the position would progress to another squeeze, of the simple squeeze variety. The reason that this does not occur after the Q is discarded on the 9 is that a squeezed position requires that at least one threat sit ''over'' the squeezed opponent. After West discards, say, the 10 on the 9, dummy discards a small club, keeping dummy's 9 as a threat sitting over West's Q. Now South can cash the A, the K and the 9 to effect another squeeze, a simple two-suit squeeze in spades and diamonds, against West. But if West discards the Q on South's final heart, South cannot arrange for a threat to sit over West's black suit holdings, a progressive squeeze cannot mature, and South is held to the one additional trick he gets from the triple squeeze. 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「triple squeeze」の詳細全文を読む スポンサード リンク
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