Non-forcing 1NT
The transfer raise takes the 3-card limit raise out of 1NT, and the 2♦ transfer takes the invitational hands with 5+♥. Thus, 1NT denies most major fits. Opener passes 1NT with any balanced minimum instead of keeping it semi-forcing as in 2/1. A balanced medium still has to bid 2♣ on a doubleton.
| 1♠ - 1NT - | |
|---|---|
| 2♣ | (11–16, 4+♣) or BAL 13–14 |
| 2♦ | 11–16, 4+♦ |
| 2♥ | 11–16, 4+♥ |
| 2♠ | 11–14, 6+♠ |
| 2NT! | 15–16, 6=♠, ≤ ♠AJ9 |
| 3♣♦♥ | 15–16, 5+# |
| 3♠ | 15–16, ((6+♠, AJT+) or 7+♠) |
| 3NT! | Gambling, 7+♠ AKQ, no outside A/K |
The threshold of suit quality is based on Binky Points:
Holding NT Suit KQJxxx 0.20 0.14 AT9xxx 0.13 0.14 KQJ9xx 0.21 0.19 AJxxxx 0.32 0.23 KQJTxx 0.29 0.26 KQJT9x 0.29 0.29 AJ9xxx 0.44 0.29 AJTxxx 0.57 0.40 AJT9xx 0.63 0.45 AQxxxx 0.76 0.52 AQ9xxx 0.86 0.57 AQTxxx 0.99 0.65—
holdings.new.txt, Binky Points computed by Thomas Andrews in 2008
Precision 2NT
The invitational 2NT from Precision shows 6 cards in the major. Opener is a narrow maximum, so responder places the contract. The only artificial bid is 3♣, asking whether opener holds three hearts so the best contract is 4♥. Everything else is natural. A weak club one-suiter has to pass.
| 1♠ - 1NT - 2NT - | |
|---|---|
| 3♣! | Ask for 3+♥ |
| 1♠ - 1NT - 2NT - 3♣ - | |
|---|---|
| 3♦! | 0–2♥ |
| 3♥ | 3+♥ |