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Learn how to use the unusual 2nt overcall to show the two lowest unbid suits at least 55 shape after the opponents open the bidding. Notrump openings show a balanced hand and can be made with a fivecard major suit or a fivecard minor suit. If you try 2nt, you might see penalty doubles in your future. See the meaning, responses, and considerations of this artificial and preemptive convention.

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