Question: What
do you when the opponent bids your Jacoby transfer bid?
Vic:
Assumption: The partners in
question play both Stayman Convention & Jacoby Transfer bids over an
Opening 1NT bid. This is an incredibly common agreement, even among very
inexperienced players.
Question (rephrased):
What do you do when partner opens 1NT & partner's LHO (Left Hand Opponent)
makes an interfering bid?
Answer: It depends. This two
word answer is the initial answer to most bridge questions.
What does it depend on? Your
partnership agreement.
If
you have not talked about the above scenario with partner & reached an
agreement on how to deal with it, then neither one of you will be able to
do anything other than guess at the meaning of any subsequent bids.
Question: What is a good
agreement?
Answer: It depends. What does
it depend on? The specific interfering bid.
Scenario: The interfering bid
is 2C. A very common & very simple agreement is called Stolen Bid Double
(it has other names as well).
DBL of a 2C overcall by responder tells opener that overcaller stole their bid.
DBL in other words is Stayman. The remainder of the auction proceeds in normal
fashion from there. Both Jacoby Transfer bids are still available & still
"on".
Scenario: The interfering bid
was anything other than 2C (2D or 2H or 2S or whatever). A simple agreement in
this scenario is to agree that all "Systems" are off. That is Stayman
& Jacoby Transfer bids simply go away. All subsequent bids by either
partner are natural (hearts means hearts - spades means spades - etc.)
The most common agreement
used by experienced players to cope with interfering bids over an Opening 1NT
is called Lebensohl. It is a very sophisticated agreement, but also challenging
to learn & master. Many less experienced partners agree to incorporate
some, but not all, of the Lebensohl Convention calls. If you do find yourself
contemplating anything beyond what is suggested above, you need to do some
reading and/or solicit advice from an experienced player.
USE STOLEN BID DBLS FOR
INTERFERING BIDS OF 2C ONLY. No experienced player would use Stolen Bid DBL
over any interfering bid other than 2C.
DBL of all other interfering
bids should be reserved for penalty.