Opener's rebid of 2NT

Opener's 2NT jump rebid
After a minor opening, a 2NT jump rebid

The line holds at least 23H, therefore it is possible to :

This is a strong bid but not forcing . With only 4-5H, the responder will pass.

S	W	N	E

The school case : no biddable major, 18H and a balanced hand

Quiz 2
NT jump rebid to show a third zone hand (in this case 19H) and a balanced distribution

Development after the opener's 2NT jump rebid

With enough strength for game and a 5 card major, the responder will name the other minor (in a Roudi style !!)
Supporting the opening minor is natural : simple or with a jump if slam is in the air...
Repeating the major suit at level 3 shows 6 cards and a hope for slam
If the responder jumps to game in his suit, it's a stop
The responder's shift (in a major) shows a 2 suit hand (5-4 or 5-5) and is forcing.

Quiz 3
♣ simple raise : game forcing. The opener shows a strength in ♦, and the line finds the right contract (3NT)

Jump raise of the opening minor : slam ambitions

Strong enough for game, and holding a 5 card major, the responder will name the other minor suit... Roudi style !

Naming the other minor suit is a kind of Roudi, asking the opener if he holds 2 or 3 cards in the responder's major suit.

Bidding 3 ♣, the responder promises 5 ♠ cards. The opener will indicate if he has 3 cards with his partner, and they may play trump game.

Responder's shift

Quiz 3
♥ shows 5 ♠ and 4 ♥ (or 5). This is game forcing, and maybe more....

Quiz 3
♥ : two-suiter, at least 5-4, and forcing to game... or more !