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NOTRUMP.CBA
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1995-09-14
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CUE BIDS IN NOTRUMP
A Cue Bid of 2NT Over a Natural Notrump Overcall
South West North
1D 1NT 2NT - unusual notrump
This cue bid shows great length in the lower two unbid suits, and
asks partner to take a choice. In the auction above, North might
have S-void H-Q107632 D-J C-A108432.
A Cue Bid of 2NT Over a 1NT Response
South West North East
1C Pass 1NT 2NT - unusual notrump
East is asking West to choose between hearts and diamonds, the
lower two unbid suits. Artificial bids do not count as a suit bid,
so the 2NT bid above would show both minors if the 1C bid is
artificial.
The principle applies when partner has doubled, with the addition
of a small subtlety:
South West North East
1D Dbl 1NT 2NT
East has hearts and clubs, all right, but the hearts are weak and
only four long: S-2 H-9632 D-65 C-KQ10873 With good hearts East
would just bid that suit, since the double implies heart support.
When Partner Has Doubled 1NT for Business
South West North East
1NT Dbl Pass 2NT - game forcing
East has a distributionally strong hand, perhaps a two-suiter, and
doesn't pass the double because West might make a bad lead.
South West North East
1S 1NT Dbl Pass
2NT - forcing to game
South West North East
1C Pass 1H 1NT
Dbl Pass 2NT - forcing to game
These 2NT cue bids show game-going hands that do not want to defend
1NT doubled. The 2NT bidder no doubt has a highly distributional
hand, but could have any strong hand that fears missing a slam.
Perhaps the notrump bid is a psych.
Over Any Response to a Strong 1NT Opening
South West North East
1NT Pass 2C 2NT - unusual notrump
An artificial bid such as this Stayman 2C response does not count
as a suit bid, so East is asking West to take a choice between the
minors.
Over an Artificial Response to a Weak 1NT Opening
South West North East
1NT Pass 2H 2NT - unusual notrump
North's bid was a Jacoby transfer bid, so the 2NT bid asks for a
choice between the minors. If 2H had been natural, 2NT would be
for takeout. See below.
Over a Natural Response to a Weak 1NT Opening
South West North East
1NT Pass 2S 2NT - takeout
When the response to a weak notrump opening is natural, as with
the 2S bid here, a 2NT bid is for takeout. The reason for this is
that a double shows a hand that has a little something in spades
and would have doubled 1NT for business if RHO had not bid. See
chapter DEFENSE VS WEAK NOTRUMP OPENINGS in the book "Counter-
measures."
The same principle applies when there has been an artificial
response to the notrump opening, but only after the 2NT bidder has
passed over the artificial response:
South West North East
1NT Pass 2C Pass
2D Pass Pass 2NT - takeout
Dbl - balanced good hand
Since 2C is an artificial bid (Stayman), an immediate 2NT bid over
2C would be unusual notrump and a double would merely show good
clubs.
When Partner's 1NT Opening Has Been Doubled
South West North
1NT Dbl 2NT
If the double is for business, the 2NT bid shows both minor suits.
If the double is an artificial call showing a one-suited hand, or
a two-suited hand but the suits are not specified (e.g., Cansino
double showing both majors or both minors) the 2NT bid has the same
transfer meaning as over a pass. See the book "Notrump Bidding."
If the artificial double shows a specific two-suiter, (both majors,
for instance), the principle of "Unusual over Unusual" applies. See
chapter DEFENSE VS TWO-SUITED CONVENTIONS in the book "Counter-
measures." In this situation the 2NT bid is a natural raise.