Tuesday, January 04, 2005 8:50 AM
NT Interference
Pass forces XX
Over artificial doubles
- Ignore & systems on
Over 2♣=1 mystery suit (as in Cappelletti):
- double=Stayman, system on.
Double of opponents artificial bids ( like 2♦ Cappelletti )
– Let me at them when they bid their real suits
Direct double of natural suits
– D.S.I.P. cards rather than trump stack
Pass & double or pass & convert
–
trump stack.
3 level Doubles
- Negative
If opponents double in the passout seat
- a redouble by opener shows 4 spades. Redouble by responder is SOS.
Rubensohl
- applies over all natural bids and two suited bids where the suit bid is natural like DONT. Stay away
from Rubensohl when their suit bids are artificial.
Texas
Transfers
- on
An “invisible
Q bid” is bidding a suit that their bid is calling for at the two level.
If available, an
invisible Q cue-bid of opponents'
suit at the 2-level (e.g. 1N-2♣(Astro)-2♥) is a weak
takeout, ostensibly 3-suited.
If there is one invisible
cue-bid available at the 2-level (e.g. 1N-2♥(Brozel)-2♠),
it is a weak takeout for the other 2 suits.
If there are two
cue-bids available, (e.g. 1N-2♣(Landy)-2♥ or 2♠), the
cheapest is a weak takeout, the other is the equivalent of a natural raise to
2N.
If their artificial
bids are higher ranking suits ,
there will be two "transfer cue-bids" ( transferring into
their suit) at 2N or higher.
The cheapest is
game-forcing "Stayman".
With no fit, opener bids 3N with both enemy suits stopped, otherwise cue-bids
the cheapest suit in which he lacks a stopper. If he makes the cheapest
cue-bid, responder counter cue-bids to promise a stopper in the cheap suit,
deny one in the expensive suit.
The other transfer cue-bid is a raise to 3N lacking a stop in the high ranking suit. Opener accepts the
transfer holding a stop, and denying a stop in the cheap suit. He bids 3N with
both suits stopped.
3N shows stops in both enemy suits.
.