Main   Bidding Guide 2Z12 by Richard Pavlicek  

Coping with Interference

When your side opens with a one-bid and
an opponent overcalls or doubles



  After a Suit Opening and a Suit Overcall  
 
Partner
1 D
Opp
1 S
You
?

With 5+ cards in enemy suit

any strengthpass 1

After a major opening with 3+ trumps

6-10 pointsraise to 2N
11-12 pointsraise to 3I
13+ pointsbid unbid suit 2F

With a balanced hand and a stopper 3

7-10 HCPbid 1 NT (if possible)N
10-12 HCPbid 2 NTI
13-16 HCPbid 3 NTN

With a 4+ card unbid suit

7+ pointsdouble (if appropriate)
6-10 pointsbid suit at 1 level 4F
11+ pointsbid suit cheapest levelF

After a minor with 5+ trumps or at least Q-x-x-x

6-10 pointsraise to 2N
11-12 pointsraise to 3I
13+ pointsbid unbid minor 2F

1 Commonly called a “trap pass,” this assumes you are playing negative doubles (topic follows). At the 2 level or higher you may trap pass with 4 good cards in the enemy suit.

2 This usually shows 4+ cards, but it may be bid with 3 cards as a waiting bid. Alternatively you may cue-bid the enemy suit, after which all bids below game are forcing.

3 Usually no unbid 4 card major.

4 With 9 or 10 points and a good 5+ card suit you may bid your suit at the 2 level rather than pass.

TopMain



  Requirements for a Negative Double  
 
Partner
1 C
Opp
1 S
You
?

An aid to finding a major-suit fit

After partner opens one of a suit, and an opponent overcalls in a suit (through 4 D), a double is not for penalty but shows 7+ points and 4+ cards in an unbid major suit.

If both majors are unbid

Double promises only one major except on the specific sequence, 1 C 1 D, double shows both (at least 4-4) since you can bid 1 H or 1 S with just one.

If both majors are bid

Double shows both minor suits (at least 4-4).



  Rebids by Opener after a Negative Double  
 
You
1 C
?
Opp
1 S
 
Partner
Dbl
 
Opp
Pass
 

Choose the best contract

Opener should try to choose the best trump suit or notrump, similar to normal rebidding style, based on the information revealed by the double.

Indicate your strength as follows

13-15 pointsminimum bidN
16-18 pointsjump bidI
19+ pointscue-bid enemy suit 5F



  Rebids by Responder after a Negative Double  
 
Partner
1 C
2 C
Opp
1 S
Pass
You
Dbl
?
Opp
Pass
 

No need to bid

Responder is not required to bid unless forced by a cue-bid. Assuming opener has indicated a hand in the minimum range (13-15):

Indicate your strength as follows

7-10 pointspass or bid 2 of suitN
11-12 points2 NT or raise to 3I
13+ pointscue-bid enemy suit 5F

5 Optionally, bid game directly if sure of the best contract.

TopMain



  After a Suit Opening and a Takeout Double  
 
Partner
1 D
Opp
Dbl
You
?

With 10+ HCP or 11+ points

any handredouble

After a major opening with 3+ trumps

6-10 pointsraise to 2 6N

With a balanced hand 3

6-9 HCPbid 1 NTN

With a 4+ card unbid suit

6-10 pointsbid suit cheapest level 7N

After a minor with 5+ trumps or at least Q-x-x-x

6-10 pointsraise to 2 6N

6 With 8-10 points you may instead raise to 3 if your trump support is exceptionally good.

7 Suit must be 6+ or a good 5 cards to bid at the 2 level.



  After a Suit Opening and a One-Notrump Overcall  
 
Partner
1 S
Opp
1 NT
You
?

With 10+ HCP or 11+ points

any handdouble (penalty)

After a major opening with 3+ trumps

6-10 pointsraise to 2 6N

With a 6+ or good 5 card unbid suit

6-10 pointsbid suit at 2 levelN

After a minor with 5+ trumps or at least Q-x-x-x

6-10 pointsraise to 2 6N



  Rebids by Opener after Interference  
 
You
1 C
?
Opp
Pass
 
Partner
1 S
 
Opp
2 D
 

General guidelines

If your right-hand opponent bids over partner’s bid, make the same rebid you would have made without interference if possible. If the bidding is too high, or if unhappy with your hand, just pass; partner has another turn. Also, be alert to double (penalty) with 4 good cards in the enemy suit.

Quack? You know how to cope with interference?

Quack, yeah. In hunting season, I just duck.



  After a One-Notrump Opening and a Suit Overcall  
 
Partner
1 NT
Opp
2 H
You
?

With 4+ cards in enemy suit

7+ pointsdouble (penalty)

With an unbid 4 card major

9+ pointscue-bid enemy suit 8F

With a 5+ card unbid suit

5-8 pointsbid suit cheapest levelN
9+ pointsjump in suit 9F

With any other hand

7-8 HCPbid 2 NTN
9-14 HCPbid 3 NTS

8 This replaces the Stayman 2 C bid. Opener must bid an unbid 4 card major if he has one; else 3 NT.

9 Jump bids to the 4 level are unique: 4 C is Gerber, 4 D requires 7+ cards, and 4 H or 4 S requires 6+ cards (sign-off). If a jump bid is inappropriate, you may instead cue-bid the enemy suit or gamble on 3 NT.



  After a One-Notrump Opening and a Double  
 
Partner
1 NT
Opp
Dbl
You
?

With 7+ HCP or 8+ points

any handredouble

With any 5+ card suit

1-7 pointsbid 2 of that suit 10S

10 The Stayman 2 C bid does not apply over a double.

TopMain

© 2002 Richard Pavlicek