Opening bid of 1 of a suit, followed by a new suit at the 1 level
A change of suit at the 1 level shows 6+ points and a 4 card suit. It is a one round force unless Responder has previously passed.
| Opener's rebids | Responder's rebids |
|---|---|
| 1NT (15 - 16 balanced) | Weak hand: Pass or rebid partner's suit or own 6 card suit Stronger hand: 2NT (8 - 9), 3NT (10+), or Raise partner's suit to 3 or 4 level, Reverse in a new suit at 2 level or bid new suit at 3 level (1 round forces) |
| 2NT (17 - 18 balanced) | Weak hand (6 - 7): Pass or rebid own 6 card suit Stronger hand: 3NT (8+), or 3 of opener's suit or new suit (1 round forces) |
| 3NT (19 balanced) | Pass unless you prefer a suit contract, or have slam ambitions |
| Rebid own suit at 2 level (12 - 15 & 5 card suit) | Weak hand (6 - 10): Pass or rebid own 6 card suit or a new suit at 2 level Stronger hand: 2NT (11 - 12), 3NT (13 - 15) or raise opener's suit (invitational) Reverse at 2 level or new suit at 3 level (1 round forces) |
| New suit at the lowest level (12 - 15, 4 card suit and infers 5 of first bid suit because haven't bid NT in first 2 rounds) | Weak hand (6 - 10): Pass or rebid own 6 card suit or give preference to opener's first suit, or 1NT Stronger hand: 2NT (11 - 12), 3NT (13 - 15) or make delayed game raise Raise one of opener's suits (invitational), or jump in own 6 card suit (invitational) |
| Rebid own suit at 3 level (shows about 7 playing tricks) | Bid game if better than mimimum |
| Raise partner's suit to 2 level (12 - 15, 4 card support) | Pass or bid game |
| Raise partner's suit to 3 level (16 - 18, 4 card support) | Pass or bid game |
| Raise partner's suit to game (19 - 20, 4 card support) | Pass |
| Reverse at 2 level with 16+ (1 round force) | Bid game if possible as opener may pass a below game bid |
| 3 of new suit with 17+ a 2 five carders (1 round force) | Bid game if possible as opener may pass a below game bid |