|2NT||Strong, artificial inquiry of opener's distribution (see below).|
|3||Natural, 6+ clubs, non-forcing.|
|3||Invites game, 3-3 in
|3||Weak, preemptive.||3NT||To play.|
Opener's weak bid is 3. Any other rebid is game-forcing.
|3||Showing a minimum. Responder can bid
3 to show 5-4 in and .
|3||5-5 in the majors. A 3/ rebid by responder is slam-invitational and forcing.|
|3||Maximum, 5-4 in and .|
|3||Maximum, 4-5 in and .|
|3NT||Maximum, 4-4 in and .|
Ekren is not a Brown Sticker Convention under WBF rules. However, it is disallowed in ACBL events. The ACBL's General Convention Chart requires two-suiters at the two level to show at least 5-4 with 10 points. The closest playable variation would be an ACBL Midchart convention: a
Ekrens was created in the 1990s and is named for its inventor, Bjorn Olav Ekren of Norway.
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