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Detail specifications 31AZ - Level 1 ★

Interventions after The Opener bids at 1 level

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After the Opener, there are 3 main types of interventions :
  • bidding a 5 card suit
  • bidding DOUBLE
  • bidding 1NT with a regular distribution and a stopper in The Opener's suit

 
Interventions with a suit
  At the 1 level with 8HCP and a "nice" 5 card suit
  At the 2 level without a jump With 10HCP and a "nice" 6 card suit.
  At the 2 level with a jump in a major with the equivalent of The Opener bidding a weak 2 (cf level 2)
  At level 3,4 and 5 with a long one suiter. "Pre-empts" (cf level 2)
SWNE
1
Pass
K
5
A
8
4
2
A
K
J
9
7
5
3
Problem E3707 PASS ... DESPITE 15HCP : no 5 suiter to bid.
 
SWNE
1
1
K
J
9
4
A
Q
J
9
3
4
Q
9
8
Problem E3753 1 ♥ : Intervene - this is like opening with this 5 solid card suit.
 
 
Double
This intervention is the most economical. It promises :
  • - At least 12-13HCP and at least 3 cards in the non bid suits. Don't double when don't have at least 4 cards in the non bid major.
  • - At least 17-18HCP regardless of distribution.

Careful !
With a strong hand, always start with double ... even if you have a "nice" suit.
SWNE
1
X
K
J
10
8
A
J
10
8
Q
7
3
A
Q
Problem E3795 Double - so that you may find a possible fit in ♥ or ♠
 
 
Intervention: 1NT
Use this bid with distribution and points as though you were The Opener. :
  • You are ideally situated behind The Opener a strength of 15-17HCP is enough.
  • A stopper in the Opponent's suit.

Careful!
Dont forget that your Partner can have 0 points! Intervening "light" will be punished by a double from Opponents.
SWNE
1
1NT
K
7
Q
J
10
A
Q
10
9
4
K
J
9
Problem E1056 As though you would have opened 1NT with this hand ... you intervene with 1NT (with a strong hold in ♦)
 
 
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