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Detail specifications 43S0 - Level 2 ★

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After a 1NT opening, the opp overcalled. How does the responder bid?
The opp can overcall by naming a suit or by doubling.
The responder :
  • uses the 'Rubensohl' convention after and over in a suit ( 2 ♦, 2 ♥ or 2 ♠) :
    • all bids by the responder at level 2 are natural and non forcing
    • from 2NT up ,all bids are transfers until 3 ♥ (transfer for ♠). 2NT is therefore artificial : transfer for ♣
    • The impossible transfer is a Stayman
    • The double is take-out : It can be a Stayman with just 8H or show a regular 8+HCP hand .
  • After a double 'Major-minor' : the responder, on the first rounds bids as if there had not been a double:
    • 2 ♣ is a Stayman
    • 2♦, 2 ♥ et 2 ♠ are transfers
    • NT bids are natural
    • a redouble is for penalty
SWNE
1NT
2
2
5
4
3
A
Q
7
6
5
6
5
4
8
7
Problem E5867 2 ♥ natural bid, that shows 5 cards in ♥ and a hand with a maximum of 7HCPs.
 
SWNE
1NT
X
2
K
9
8
3
Q
J
5
9
8
5
3
A
5
Problem E59982 ♣ Stayman. After your partner opened 1NT, do not take into account the 'double' in the first round of bidding.
 
 
After a 1 NT opening, the LHO overcalled.
Après une intervention naturelle à 2 ♦, 2 ♥ or 2 ♠
  • all bids by the responder at level 2 are natural
  • from 2NT up ,all bids are transfers until 3 ♥ (transfer for ♠). 2NT is therefore artificial : transfer for ♣
  • The impossible transfer is a Stayman
  • The double is take-out : It can be a Stayman with just 8H or show a regular 8+HCP hand .
  • A 3♠ bid is an invite to game at 3NT, if the opener olds the suit of the overcall .
SWNE
1NT
2
2
K
J
8
7
6
7
10
9
8
7
6
5
4
Problem E5868 Natural bid, with cards in ♠, 7HCP maximum.
 
SWNE
1NT
2
X
5
4
A
K
10
J
10
8
7
J
10
9
6
Problem E5873 take-out double Here, the double is equivalent to a 2 NT you would have bid, had the LHO not overcalled
 
 
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