| 2♣ | - | ? | Meaning of the opening: 10-15 HCP, 6+ ♣. |
| - 2♦: |  inquiry,
always at least game try, most gameforcing hands should bid this,
and game try hands which look for a 4-card major.
If you have exactly a game try then you'd better have an own 4-card major,
otherwise you may have a problem later.
|
| - 2♥♠: | nonforcing game try with a good 5-card or 6+ suit, about 9-11 points |
| - 2N: | game try a with some stoppers, but not interested in majors (now opener's 3M is good hand with singleton (!) in the suit, responder's 4♣ denies good-enough stopper, can be passed) |
| - 3♣: | pre-empt (perhaps mild game try) with some support (Hx, xxx or better) |
| - 3♦♥♠: | strong (but nonforcing) game try with HHxxxx or better suit |
| - 4♣: | pre-empt |
| - 4♦: | RKC♣ |
| 2♣ | - | 2♦ |
| ? | ||
has a 4-card (or 5-card) major| 2♣ | - | 2♦ | responder: invit+ | |
| 2♥ | - | ? | opener: has a 4-card (perhaps 5-card) major |
| - 2♠: |
GF relay |
| - 2N: |
F1, asks the major and strength:
(a) game try with 4-card ♥ (may have 4-4 majors) (b) GF that wants to declare NT (not a slam-going hand) |
| - 3♣: | game try with 4-card ♠ and ♣ tolerance |
| - 3♦: | game try with 6♦-4♠ |
| 2♣ | - | 2♦ | ||
| 2♥ | - | 2♠ | opener: has a 4-card major. 2♠ = GFR | |
| ? | opener shows strength only with 3♠/N bids (as normally) |
| - 2N: | 4-card ♥, 1+ ♦. S1 asks shape (same as with 4-ard ♠), S2 = R♣, S3 = R♥ |
| - 3♣: | void ♦. S1 asks the 4-card major, 3M asks the number of cards in that suit (2, 3, 4, 5, 5+), in case og 3+ it is the trump suit and ORKC follows |
| - 3♦♥♠: | 4-card ♠, singleton ♦ / singleton ♥ / void ♥ |
| 2♣ | - | 2♦ | ||
| 2♥ | - | 2N | opener: has a 4-card major | |
| ? | responder: game try with 4-vard ♥, or GF that wants to declare NT |
| - 3♣: | 4-es ♠, weak. Erre a 3♦ (= 6♦-4♥ gam try) and 3/4 ♠ NAT sign-off |
| - 3♦: | 4-es ♥, weak |
| - 3M: | 4oM (!), strong |