The weak two bid is a common used in the game of contract bridge, where an opening bid of two diamonds, hearts or spades signifies a weak hand, typically containing a long suit. It may be deployed within any system structure that offers a forcing artificial opening to handle hands of (eg) 20+ points, or an expectation of 8 or more tricks. It is form of preemptive bid. The strong call releases any remaining two level openings for pre-empting your opponents. In North America it is commonly used in combination with the strong two clubs convention. Worldwide there are many other variants, the commonest being a strong one club. “Weak Two” refers specifically to an opening bid, not to be confused with the "weak jump overcall". That denotes a similar hand type, made over an opponent's opening bid. Effectiveness 2S is most powerful in terms of pre-emption against your opponents. 2H is less so, easily defended by either a take out double or a 2S overcall. Paradoxically the 2D opening can be very disruptive. Your opponents have to explore potential fit in both majors, and then play at the correct level. 2C pre-emption is uncommon, almost always associated with forcing 1-level agreements. Variations On the islands of Britain a system termed Benjaminised "Benji" Acol is common, associated with forcing 2C and 2D bids. One of these as powerful as the American 2C, The other a traditional "Acol Two" in as yet unspecified suit. The style was very popular in the 1990s, with more recent return in tournament Bridge strong but flexible 2C and three Weak Twos. Requirements for a weak two bid vary by partnership. A common agreement is that it requires: a good suit of exactly 6 cards in diamonds, hearts or spades; longer suits make a higher preemptive opening bid no 5-card suit. No 4-card major side suit in tournament play, the announced range for a weak two-bid is varies in a 5-11 HCP range, often subject to vulnerability and seat position. Many perceive hands with 6-card suit and 11 HCP strong enough to open at the one level; see Rule of 20. Agreements should ensure no gap between the one level and two level call. What "a good suit" might be is a further matter of partnership agreement. American Contract Bridge League recommends that it contain 2+ top honours, or 3 of the top 5 cards in