|2NT*||3!||* Balanced with 18-19 points|
The artificial 3 bid shows a weak hand, generally with at least five cards in responder's original suit. With three-card support, opener bids that suit at the three-level. Without three-card support, opener is required to rebid 3, artificial. All of responder's subsequent calls over 3 are natural signoffs, with the exception of 3NT, which shows 10-12 points and support for opener's original suit. The 3NT rebid, however, is nonforcing.
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