Note: This page is incomplete - only the rebids after a major-asking bid are displayed for now.
If you opened 1♣ and your partner made a first response (or your opponents have bid, keeping the bidding open), you should have a pretty good idea of where you are going. Your first responsibility is to show a 4-card major suit (if asked for), support for your partner's major (if bid) or indicate the nature of your hand otherwise.
Rebids by the 1♣ opener after the bidding sequence 1♣ - 1♦ by partner, or 1♣ - DBL by LHO - RDBL by partner
| Your bid | Requirements | Comments |
| 1♦ (after 1♣ - DBL - RDBL) | No 4-card major, 4+ diamonds. | With 4-4-3-2 distribution, prefer 1NT. |
| 1♥/1♠ | 4 cards in the suit named. With 4 in both majors, bid 1♥ | |
| 1NT | 13-15 HPC. Denies a 4-card major suit; balanced or semi-balanced distribution. | |
| 2♣ | 5+, preferably 6+ clubs. Denies a 4-card major suit. | With 5-3-3-2 distribution, prefer 1NT. |
| 2♦/2♥/2♠ | 17-20 DP, 4-card (2♦ could be with 5+ diamonds, if with 6 clubs and 5 diamonds). | |
| 2NT | 17-18 HCP. Denies a 4-card major suit; balanced or semi-balanced distribution. | |
| 3♣ | 17+ DP. 5+, preferably 6+ clubs. Denies a 4-card major suit. | With 5-3-3-2 distribution, prefer 2NT. |
| 3♦/3♥/3♠ | 20+ DP, 4-card suit (3♦ could be with 5+ diamonds, if with 6 clubs and 5 diamonds). | Easier way to show this kind of distribution than with opening with a forcing 2♣. |
| 3NT | Solid 6+ card club suit, no 4-card major, and A or K in all side suits (singleton K not allowed) | |
| 4♣ | Long solid or almost-solid club suit, no 4-card major, and 9 playing tricks. | |
| 4NT | Blackwood. Very strong try for 6♣ or 6NT. | All you care about is how many Aces opener has. |
If RHO makes a bid after partner's major-asking bid, your job is to describe your hand as well as you can. In many cases you can just bid as you would have bid otherwise, with maybe at one level up. In aiddtion, you have the paraphernalia of competitive bidding, such as passing, doubling, redoubling, making a cue-bid of opponent's suit, and using a NT bid to indicate some control of opponent's suit.
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