Stayman convention
01
斯台曼约定叫, 斯台曼叫牌体系
a bidding system used by the responder to ask the opener if they have a four-card major suit, typically either hearts or spades, after an opening bid of 1NT
例子
By using the Stayman convention, the responder can ask the opener if they have a four-card major suit.
通过使用斯台曼约定,应答者可以询问开叫者是否有四张高花套。



























