A 2 ♣ response to a 1 NT opening is specified as the 'non-forcing' version of the Stayman convention.Some of the specific agreements in Standard American Yellow Card (SAYC) that elaborate on basic Standard American are: Common notrump follow-up conventions include Stayman, Jacoby transfers and Gerber.Notrump openers show a balanced hand, with the following common point ranges:. In Goren's system, this was a strong game-forcing raise. Limit Raises: A jump-raise of the opener's suit by responder, in the absence of opponent interference, is invitational to game.Pre-emptive opening bids: All suit openings above the two level are pre-emptive, promising a long and strong suit.Strong two clubs: All unbalanced hands too strong to open at the one-level are opened with an artificial 2 ♣ call, as well as balanced hands stronger than 22 HCP (unless opener has the right strength for a 3NT opening bid).Weak two bids: Two diamond, heart or spade openers are made with a sound six-card suit in a hand without enough overall strength to open 1 of the suit.Five-card majors: opening a major suit promises at least a five-card holding in that suit.
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