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Detail specifications 12CG - Level 1

The opener after a change of suit (2 over 1)

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By changing suit 2 over 1 (without jump), the responder indicates a minimum strength of 11HCP
Your second bid will give him :
- your side's strength: game possible or certain, or a possible slam.
-the distribution of your hand.
His change of suit 2 over 1 is forcing and auto-forcing:not only must you make a bid but he promises to speak again.
SWNE
1
Pass
2
Pass
A
K
4
3
4
3
A
K
10
4
3
6
3
Problème E2107
An example of a change of suit 2 over 1 by the responder which is forcing and auto-forcing
 
SWNE
1
Pass
2
Pass
5
5
3
6
5
4
3
A
K
Q
10
8
3
Problème E2219
2 diamonds is forcing and auto-forcing.
 
 
1) The opener has a fit in the responder's major, (1 spade - 2 hearts sequence)
Indicate this fit as a priority :
  • 4 hearts with a first zone hand and 4 cards go to game in hearts.
  • 3 hearts with a second zone hand and 4 cards to see if slam is possible.
  • With very strong hands, begin by bidding a maximum two-suiter
Note that 3 hearts promises a hand with more points than 4 hearts.
SWNE
1
Pass
2
Pass
3
K
Q
10
7
6
A
K
9
4
7
4
A
4
Problème E1622
3 hearts With a second-zone hand and a 4-card fit, check to see if slam is possible.
 
SWNE
1
Pass
2
Pass
4
A
J
9
K
Q
J
10
8
6
4
2
Q
9
Problème E1514
4 hearts If your partner is much stronger than the 11HCP he promised, he will let you know...by continuing the auction.
 
 
2) Without a fit in the responder's major, the opener will give:
  - his two-suiter
  • Minimum two-suiter with 12-17HCP
  • Maximum two-suiter as from 15-16HCP (an attenuated maximum two-suiter)

  -his balanced hand
  • 2NT with a second-zone hand (after a major opening)
  • 3NT with a third-zone hand (after a major opening)

  - his one-suiter by repeating his opening suit (6cards)
  • With jump and a second-zone hand

SWNE
1
Pass
2
Pass
2
2
A
K
J
9
8
J
9
4
A
Q
J
10
Problème E1529
Minimum two-suiter with your hand 12-17HCP (16 here). Don't worry, your partner has promised to bid again.
 
 
Important !!!
  • Your strength will not always allow you to give your two-suiter hand, notably when the 5-card suit is the minor and not the major... Don't mislead your partner as to the strength of your hand.
  • After the responder's change of suit at 2 level, the opener can announce a maximum two-suiter as from 15-16HCP (and not 17-18). He knows that his side has the strength to go to game.

SWNE
1
Pass
2
Pass
2
Pass
Pass
Pass
A
Q
10
9
K
Q
J
9
8
2
7
6
4
Problème E1507
2 heartsYour partner has announced a minimum of 11HCP. You have 12 and no other possibility but to repeat your strong 5-card suit. 2 spades would indicate at least 15-16HCP.