1NT | 2 (Stayman) |

2 (no major 4°) | 3 (5 4) |

? (with fit ) |

If the opener has no fit no problem, he bids 3NT. But if he has fit he must bid 4 because he does not know if the responder has just 5HCP or at the contrary he has 13HCP and a slam hope. The controls are not possible.

Furthermore, if the opened bidded a control 4 or 4, the control process would not or badly operate, because the color is not yet designated.

2NT | 3 (Stayman) |

2 (no maj. 4°) | 3 (5 4) |

? (with fit ) |

The problem is exactly the same.

2NT | 3 (Stayman) |

3NT (2 maj. 4°) | ? |

There is a fit in a least one major. After 3NT from opener The responder bids his major by transfer at level 4. The opener must complete to the major of responder, because this last may have only 5HCP. The controls are not possible.

For our visitors who have not yet read the "majeure précisée", main subject of our site, the openings 1 and 2 are exactly and respectively equivalent to classical openings 1NT and 2NT, that is to say balanced and with 15-17HCP and with 20-21HCP.

1 | 2 (with 5 4, 5 4, or 4 4) * |

2(no major 4°) | |

2 (with 4) * | |

2 (with 4) * | |

2NT (with 4 4) ** |

* After the answer 2 the responder closes to 4 and after answer
2 to 4, for game. With slam hope he bids his first control
at level 4.

** The responder bids his 4cards-major by transfer, 3 for
or 3 for . After completing by opener in the responder's major
the responder closes to game in the designated major, but he bids his first control if he has a slam hope.

The answer 2 from opener :

1 | 2 (with 4 4, 5 4, or 4 4) |

2(no major 4°) | 2 (with 4 4) and 8HCP * |

2 (with 4 4) at least 9HCP * | |

3 (with 5 4 ) at least 9HCP ** | |

3 (with 5 4 ) at least 9HCP ** |

* The opener corrects to 2NT or 3NT according to his strenght. If corrected to 2NT, the responder closes to 3NT with at least 10HCP.

(If the responder has a five-cards major with 8HCP that he will show via a Stayman bidding, he has at his disposal 2 other disrinct auctions. Read if necessary
Stayman bidding with five-cards major. about this matter.)

** If fitted the opener cmpletes in five-cards major of responder. If not he completes to 3NT.

Theese economical biddings 3 et 3 are quite distinct
from mixed 4M 5m two-suited which are included in the indirect Stayman 2.

Theese same mechanisms cannot be used due to the higher bidding level. But the economical nature of the opening 2 allows control biddings having same efficiency : The fit in major, if it exists, will be always confirmed at level 3, what allows always the controls.

2 | 3 (with 5 4 or 4 4) |

3NT (with 2 and 3) | |

3 (with 4) * | |

3 (with 3 or 4 ) ** |

* Precedence over 3, even
with 4
et 3
or 4.

The responder closes to if just for game. If he has slam hope he
bids his first control.

** Denies 4.
With 4 the responder would have bidded
3.
With 5 the responder closes
to 4 if just for game.
If he has slam hope he bids his first control.

If the responder has 4
4 he makes the interrogative bidding
3 in order to know if the opener has
either 3
or 4. As answer the opener bids 3NT
with 3,
but he bids a preempted control 4
ou 4 if he
has 4 :

2 | 3 (with 5 4 or 4 4) |

3 (with 3 ou 4 ) * | 3 (with 4 4) forcing |

3NT (with 3 ) | |

4 or 4 (with 4 ) ** |

* Without 4.
With 4 the opener had to bid
3 instead of
3.

** First control. The responder closes to 4
if just for game. If he has slam hope he bids his first control.

2 | 3 (with 5 4) |

3NT (with 2 and 3) | |

3 (with 4) * | |

3 (with 3 or 4) * |

* The responder closes to game at level 4, if just for game. If he has slam hope he bids his first control.

Never use the response 3 with 4 4. It could result in a major misfit 43 and to necessity for the responder to play himself the game 3NT.

NB : A double major fit is possible. If this occurs the opener chooses the major to play, generally in the fit 44.

See also the negative controls

* Chose mode "Read" is more convenient for reading, but the printing result isthen poor.

** Choose mode "Print" is necessary for perfect printing. This mode may also be used for full scren reading.
Once mode "Print" has been selected, use the command Print of your computer

maubird at orange.fr

AM