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MINXFER.NTA
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1995-08-29
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MINOR SUIT TRANSFER BIDS
There is no reason that transfer bids cannot be extended to show
the minor suits after a 1NT opening: A 2S response shows clubs and
a 2NT response shows diamonds. How do you raise 1NT to 2NT? Just
bid 2C, Stayman, then bid 2NT. Minor suit transfers apply whenever
Jacoby transfers do, as specified in the discussion of Jacoby
transfers.
The 2S Response
Opener Responder
1NT 2S - transfer to clubs
Note that minor suit transfers have an added dimension: There is
room for a bid between the transfer response and the transfer suit.
After the 2S response, opener can bid 2NT or 3C without going past
the transfer suit. Which should she bid? It depends on her hand,
especially her club fit. If she would accept an invitation to game
based on a long broken club suit, she bids 3C. If not, she bids
2NT. For instance, responder could have S-J2 H-32 D-Q87 C-A98763.
He needs a fine club fit and quick tricks outside in order to
produce game in notrump.
The 2NT response to the 2S transfer does not necessarily show a
minimum notrump opening. Opener can have a maximum, but a poor fit
in clubs. Nor does the 3C response show a maximum notrump. Opener
could have something like S-AQ2 H-K107 D-A76 C-K543, a hand that
will produce game opposite six clubs to the ace with a finesse at
worst.
With a bad hand, responder will pass opener's 3C bid, or correct
a 2NT bid to 3C, which opener must pass. With an invitational club
hand, responder will bid 3C over 2NT (since opener would decline
an invitation), and will bid 3NT over 3C.
Suppose responder has a strong hand, with clubs plus another suit
or a notrump shape (5-3-3-2, 6-3-2-2). Responder can force to game
with anything but a 3C rebid:
Opener Responder
1NT 2S - transfer to clubs
2NT 3C is a sign-off
3D/3H/3S is forcing to game
3NT is a mild slam try
4D/4H is a splinter bid
4NT is a stronger slam try
4S is an artificial notrump raise
The 3NT bid must be a mild slam try, in view of opener's non-
acceptance of an invitational club bid. Otherwise, why didn't
responder bid 3NT immediately over 1NT? When opener bids 3C to show
a good club fit, responder must bid 4NT to make a slam try in
notrump; a 3NT rebid would be interpreted as a sign-off.
The splinter bids show a singleton in the splinter suit, good
clubs, and a slammish hand. Opener signs off in notrump when
holding duplication (secondary strength) in the splinter suit.
Spades are never used as a splinter bid when 4NT is a natural
notrump raise. Instead, a 4S bid is a notrump slam try that implies
a need for a fit with clubs if they are to be useful in a notrump
slam (e.g., five clubs headed by only one of the top three honors).
Conversely, the 4NT raise implies fairly strong clubs.
Transferring to a minor and then bidding a major implies a strong
aversion to a 3NT contract, perhaps because of extreme weakness in
the other two suits, or maybe because slam is possible if opener
fits the minor well. If 3NT looks okay, use Stayman and forget the
minor if slam is unlikely.
Either minor could be longer (e.g., 5-4, 4-5) when responder shows
both minors this way, so opener should be slow to raise either
minor without four-card support. Responder may not be greatly
interested in slam, since he has not gone past 3NT. Possibly he is
afraid that 3NT might fail because of weakness in one or both
majors. Suppose responder has S-Q83 H-6 D-AK93 C-J9762. He responds
2S, transfer to clubs, and then bids 3D next. If opener has just
one major stopped, he should bid it. With both majors stopped, he
usually bids 3NT:
Opener Responder
1NT 2S
2NT/3C 3D
3H/3S - showing a suit stopped
3NT - both majors stopped
The 2NT Response
Opener Responder
1NT 2NT - transfer to diamonds
After a 2NT diamond transfer, opener bids 3D to show a diamond fit,
otherwise bids 3C.
A "new suit" bid by responder is forcing to game, showing a second
suit, and splinter bids apply as with the 2S transfer:
Opener Responder
1NT 2NT - transfer to diamonds
3C/3D 3H/3S/4C - forcing, suit-showing
4H - splinter bid
4S - artificial notrump slam try
4NT - natural notrump slam try
5C - asking bid
Splinter bids cannot be made at the five level; see chapter ASKING
BIDS in the book "Strong Bidding." Showing a club suit after the
diamond transfer requires more strength than the other way around
(clubs, then diamonds), which can be done at the three level. Also,
clubs will not be the longer suit when the minors are shown this
way. As said above, the 4S artificial notrump slam try implies that
the diamond suit needs a good fit to be useful for slam. Converse-
ly, the 4NT bid implies that the diamond suit is fairly strong.
Note that 4S is never used as a splinter bid in situations where
it is needed as a notrump slam try bid (unlike a Super Gerber 4S
bid, which takes preference over the notrump slam try meaning).
The 2NT transfer is also used with a weak two-suiter in the minors.
Whether opener rebids 3C or 3D, responder passes, probably ending
up in the right spot.