Opening bids in 1st and 2nd seat |
Responses |
|
1 | 13 - 16 HCP unbalanced (rule of 22) or 15 - 17 balanced | See below |
1 | 17+ unbalanced (rule of 26) or 18+ balanced | See below |
1 | 8 - 12 HCP, 4+, longer side suit possible | 1/-module |
1 | 8 - 12 HCP, 4+, longer side suit possible | 1/-module |
1NT | 11 - 14 balanced | Bidding after weak NT |
2 | 8 - 12 HCP, 5+, no 4/ | 2/-module |
2 | 8 - 12 HCP, 5+, no 4/ | 2/-module |
2 | 8 - 12 HCP, 5 5+ other | 2/-module |
2 | 8 - 12 HCP, 5 5+/ | 2/-module |
2NT | 8 - 12 HCP, 5 5 | Unusual 2NT |
Response | Further Bidding | |
1 | 0 - 6 (7) or Game Forcing | See below |
1 | 7 - 10 HCP, 4+, longer side suit possible | 1/-module |
1 | 7 - 10 HCP, 4+, longer side suit possible | 1/-module |
1NT | 8 - 10 balanced | Bidding after weak NT |
2 | 7 - 10 HCP, 5+, no 4/ | 2/-module |
2 | 7 - 10 HCP, 5+, no 4/ | 2/-module |
2 | 7 - 10 HCP, 5 5+ other | 2/-module |
2 | 7 - 10 HCP, 5 5+/ | 2/-module |
2NT | 7 - 10 HCP, 5 5 | Unusual 2NT |
After interference:
Rebid | Further Bidding | |
1 | 13 - 16 HCP, 4+, longer side suit possible | 1/-module |
1 | 13 - 16 HCP, 4+, longer side suit possible | 1/-module |
1NT | 15 - 17 balanced | Bidding after strong NT |
2 | 13 - 16 HCP, 5+, no 4/ | 2/-module |
2 | 13 - 16 HCP, 5+, no 4/ | 2/-module |
2 | 13 - 16 HCP, 5 5+ other | 2/-module |
2 | 13 - 16 HCP, 5 5+/ | 2/-module |
2NT | 13 - 16 HCP, 5 5 | Unusual 2NT |
Response | Further Bidding | |
1 | 0 - 3 Unbalanced, or 0 - 4 / 9 - 10(11) balanced | See 1 - 1 and add 3 HCP |
1 | 4 - 7 HCP, 4+, longer side suit possible | 1/-module |
1 | 4 - 7 HCP, 4+, longer side suit possible | 1/-module |
1NT | 5 - 8 balanced | Bidding after weak NT |
2 | 4 - 7 HCP, 5+, no 4/ | 2/-module |
2 | 4 - 7 HCP, 5+, no 4/ | 2/-module |
2 | 4 - 7 HCP, 5 5+ other | 2/-module |
2 | 4 - 7 HCP, 5 5+/ | 2/-module |
2NT | 4 - 7 HCP, 5 5 | Unusual 2NT |
Response | Further Bidding | |
1 | Negative | 1 is 22+ or 23+ bal., the rest is natural and limited (1NT 18-20, 2NT 21-22). |
Opposite a passed-hand, 1 is GF (about 2 HCP more). | ||
1 | GF, 5+, unbal. | |
1NT | GF, 5+ | |
2 | GF Balanced | |
2 | GF, 5+ | |
2 | GF, 5+ | |
2 | GF, 4441 | 2NT asks shortness |
2NT | GF, 5 5 |
Fit showing bids
Responses without fit
If opener accepts the transfer to 2M, any bid by responder is a natural game try.
If the transfer has been accepted, responder can show his real intentions:
After a natural non-jump overcall:
1/ module
This module handles the bidding after someone has shown a limited hand with 4-card or longer in a major.
This bid shows an unbalanced hand (5332 is included in 1NT). The major is usually 4 or 6 cards long but possibly 5M + 4m. With 5-4 majors bid the 4-card suit first.
If the bidding was preceded by 1, then responder is never very weak but everything stays the same.
If the bidding was preceded by 1 - 1, responder is either weak or GF. The weak type may take the following actions:
Response
Further Bidding
2M
To play, often a 3-card suit.
"Opener" passes unless he has a 6-card suit.
3M
Pre-emptive
4M
To play
2M-1
3-card support and game interest
See below
2NT
Invitational to game or slam, 4-card support
3M signoff, 3NT balanced maximum, new suit is a singleton
Response
Further bidding
1
(after 1) 10+ HCP, 4+
Natural, see below
1NT
Transfer to
See transfer 2/1
2
Transfer to
See transfer 2/1
2
(after 1) Transfer to
See transfer 2/1
2
(after 1) To play
3lower
GF, 6-card suit
Bidding after 1M - 2M-1
After responder has shown 3-card support, opener usually accepts:
Bidding after 1 - 1
This is the only 1-over-1 response in the system. Bidding continues naturally.
The 2/1 Transfer response
To create extra bidding space, the 2/1 responses are made via a transfer. They usually show a 5-card suit, although they
can be made with a 4-card suit on strong hands, or with very weak hands with a 6-card suit. Further bidding is natural:
1M - 2x-1 - 2x - ?
After interference:
A double is ignored.
2/ module
This module handles the bidding after someone has shown a limited hand with at least a 5-card minor, without a 4-card major.
The bidding continues naturally as after a weak two bid.
Response
Further Bidding
New Suit
Invite or better, 5+card
2NT and repeating the minor are negative bids, anything else is GF
2NT
Asks feature
Repeating the minor is negative, 3NT shows a semi-solid 6-card suit.
2/ module
After 2, 2 is pass or correct, 2NT is strong and asks for the second suit. After this the 3 rebid shows 5 - 5 majors.
3 is forcing and shows 6+
After 2, 3 is pass or correct, 2NT is strong and asks for the second suit.
3 is forcing and shows 6+
Afer both bids, 3 shows a fit in the known suit and invites to game.