| Box O2B
(Version 1.0)
| Opener's Rebid after opening One of a Suit (1♣, 1♦, 1♥, 1♠)
|
| Responder's Bid
| Opener's Rebids
| Meaning
| Forcing?
| Where to next?
|
| One of a New Suit
| Pass
| Minimum opening hand (i.e. 8-12 HCP), little support for responder, no other 4+ card suit.
| NF
|
|
| One or Two of a New Suit
| 4+ card suit.
| NF
|
|
| 1NT
| 11-16 HCP and fairly balanced with a 5-card suit.
| NF
|
|
| Rebid of Opener's original suit at the 2-level
| 6-card suit.
| NF
|
|
| Raise Responder's suit to the 2-level
| 3-card support and less than 10 HCP.
| NF
|
|
| 2NT
| The Simplex 2NT: 10+ HCP and 4+ card support for Responder's suit.
| NF
|
|
| Rebid of Opener's original suit at the 3-level
| 7+ card suit.
| NF
|
|
| Raise Responder's suit to the 3-level
| 4-card support and less than 10 HCP.
| NF
|
|
| Raise Responder's suit to the 4-level
| 5-card support and less than 10 HCP.
| NF
|
|
| Raise Responder's minor to the 5-level
| 6-card support and less than 10 HCP.
| NF
|
|
| 1NT
| Pass
| 8-10 HCP and a 5-3-3-2 shape.
| NF
|
|
| Rebid of Opener's original suit at the 2-level
| 6-card suit.
| NF
|
|
| Two of a New Suit
| 4+ card suit.
| NF
|
|
| 2NT
| 12-14 HCP, balanced or semi-balanced.
| NF
|
|
| Rebid of Opener's original suit at the 3-level
| 7+ card suit.
| NF
|
|
| 3NT
| 15+ HCP, balanced.
| NF
|
|
| Two of a New Suit
| Pass
| Minimum opening hand (i.e. 8-12 HCP), little support for responder, no other 4+ card suit.
| NF
|
|
| Two of a New Suit
| 4+ card suit.
| NF
|
|
| Rebid of Opener's original suit at the 2-level
| 6-card suit.
| NF
|
|
| 2NT
| The Simplex 2NT: 10+ HCP and 4+ card support for Responder's suit.
| NF
|
|
| Raise Responder's suit to the 3-level
| 3-card support and less than 10 HCP.
| NF
|
|
| New Suit at the 3-level
| 5+ card suit.
| NF
|
|
| Rebid of Opener's original suit at the 3-level
| 7+ card suit.
| NF
|
|
| Raise Responder's suit to the 4-level
| 4-card support and less than 10 HCP.
| NF
|
|
| Raise Responder's minor to the 5-level
| 5-card support and less than 10 HCP.
| NF
|
|
| 2NT
| Rebid of Opener's suit at the 3-level
| Up to 13 HCP.
| NF
|
|
| Cue-bid of cheapest 1st-round control
| 14+ HCP.
| F
|
|
| Three of a New Suit
| Rebid of Opener's original suit at the 3-level
| Minimum opening hand (i.e. 8-12 HCP), less than 4-card support for responder, no other 4+ card suit biddable at the 3-level.
| NF
|
|
| Three of a New Suit
| 4+ card suit.
| NF
|
|
| 3NT
| Balanced, preferably with the other two suits stopped.
| NF
|
|
| Rebid of Opener's original suit at the 4-level
| 6+ card suit.
| NF
|
|
| Raise Responder's suit to the 4-level
| 3+ card support and 8-12 HCP.
| NF
|
|
| 4NT
| Blackwood: 13+ HCP.
| NF
|
|
