Conventions in depth
After an opponent doubles partner’s major opening, a jump to 2NT shows a limit raise or better with four-card support.
Partner opens one heart or one spade, and the next opponent doubles for takeout. You may hold any of several very different hands: a weak hand with support that wants to obstruct the opponents; a good raise worth inviting game or more; or values with no fit. If every raise were natural, partner could not tell these apart. Jordan 2NT uses the jump to 2NT, which has little natural use here, for the good raise.
The bid is artificial: it says nothing about wanting to play in notrump. It needs about ten or more support points. Partner then knows you have a real raise, with room below game to explore.
| Partner | Opp. | You |
|---|---|---|
| 1♥ | Dbl | 2NT |
Your 2NT is the Jordan bid.
Because the good raise has its own bid, the other raises can be more precise:
Jordan 2NT hands the decision to opener, who now knows a good fit is there. With fewer than 15 support points, opener signs off at three of the major. With 15 or more, opener bids the game, or with slam in mind begins to explore. Responder, holding 13 or more support points, raises the sign-off to game.
Jacoby 2NT shows a game-forcing raise of partner’s major when the opponents are silent. After a takeout double, Jordan 2NT takes its place and shows a limit raise or better.
BidMaestro plays Jordan 2NT as a standard, always-on part of its bidding over a takeout double of a major opening. It is not a convention you switch on or off. Over a minor-suit opening the app does not use Jordan.
After the opponents double partner’s major opening, 2NT shows a raise of at least limit strength with four trumps. Because 2NT carries the good raise, the direct jump to three of the major stays purely pre-emptive.
