Rebidding Opener's Suit by David Bird

A: 2♦. Some players are willing to rebid 1NT with a singleton in partner's suit. This describes the strength well here, and if that is your style, you should stick with it.

Most players like to have a balanced hand (no singleton) when they rebid in no-trump. In that case, you will rebid 2♦ when you have a near-minimum point-count. To rebid 2♥ would be a 'reverse', promising at least a good 16 points.

Your result so far:

A: 3♦. Now you have a stronger hand and might miss a game if you rebid only 2♦. You should rebid 3♦. This shows around 16-18, but it is non-forcing. If partner has only 5 or 6 points, they are allowed to pass.

Your result so far:

A: 3NT. You are too strong to rebid a non-forcing 3♣. A rebid of 4♣ would carry you past the most likely game of 3NT (and is sometimes played as agreeing spades as trumps, anyway). Easily best is to bid 3NT yourself. You're relying on a heart stopper from your partner, who has bid the suit.

A rebid of 3NT on this type of auction never shows a balanced hand. 2NT would show 18-19 points. 3NT shows a long and strong primary suit.

Your result so far:

A: 3♥. When partner has responded at the one-level, a jump rebid in your suit is non-forcing. This changes when partner has shown more values by responding at the two-level.

Unless you are playing the system known as 'two-over-one', where a two-level response is forcing to game, rebidding 2♥ would be non-forcing. The recommended 3♥ is forcing to game and therefore an adequate rebid.

Your result so far:

A: 4♥. Since 3♥ would be non-forcing facing a one-level response, you should rebid 4♥.

Note that the hand is not worth a 2♣ opening.

Your result so far:

A: 3♣. A rebid of 3♦ would not be forcing. In any case, it is much better to show your second suit. A jump rebid in a new suit is forcing to game.

Your result so far: