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JTO.NTA
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1995-08-30
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THE JUMP TAKEOUT RESPONSE
Opener Responder
1NT 3C/3D/3H/3S - slam try
The jump takeout shows a good suit of at least five cards, probably
unbalanced hand, and slam interest. It is not a slam try in
competition:
South West North
1NT 2C 3D/3H/3S
If the 2C bid is natural, the jump is invitational at match point
scoring, forcing at IMP scoring. A cue bid is used for game-forcing
Stayman. See WHEN THE OPPONENTS INTERVENE.
After a jump takeout opener rebids 3NT if he lacks adequate trump
support for responder's suit. He need not fear missing a slam by
bidding 3NT with a maximum, because responder will bid again if
all she needs is a maximum opposite.
With trump support, opener's action is different for majors and
minors. If the suit is a major, opener raises with a minimum, makes
a notrumper cue bid or jump raise with a maximum:
Opener Responder
1NT 3H - slam try
3S/4C/4D - notrumper cue bid, heart support, maximum hand
3NT - lacks heart support, may be minimum or maximum
4H - heart support, minimum hand
4NT - Roman Key Card Blackwood (RKCB)
5S/6S - extra good spades and extra good hand, good controls
Opener Responder
1NT 3S - slam try
3NT - lacks spade support, may be minimum or maximum
4C/4D/4H - notrumper cue bid, spade support, maximum
4S - spade support, minimum hand
4NT - RKCB
5S/6S - extra good spades and extra good hand, good controls
Notice that opener's action is opposite of that taken when a
Stayman or UHC bidder shows a major suit. In that case opener makes
a notrumper cue bid with a minimum, not with a maximum, when he
has support. Responder can therefore choose the sequence that is
appropriate for the strength of his major suit slam try, using the
jump takeout with a minimum hand for slam, Stayman or UHC with
better hands.
Jumps in a minor suit, however, are treated differently: Raises are
stronger than a three-level notrumper cue bid (but four-level cue
bids are strong):
Opener Responder
1NT 3D - slam try
3H/3S - notrumper cue bid in support of diamonds, may be minimum
3NT - denies diamond support, may be minimum or maximum
4C - notrumper cue bid in support of diamonds, maximum hand
4D - diamond support, good hand
4NT - RKCB
The bidding is similar after a jump takeout of 3C. The reason that
a four-level bid shows a maximum, of course, is that game in
notrump has been bypassed. With a minimum and trump support, opener
must make a three-level notrumper cue bid, even when lacking an
appropriate suit for that action. "Minimum" and "maximum" evalua-
tion must include a consideration of fit and side suit controls,
not just HCP.
If responder bids notrump after hearing a notrumper cue bid in
support of a minor, he probably has a singleton or void in that
suit--the hand does not fit:
Opener Responder
1NT 3D
4C 4NT - short clubs, sign-off
Otherwise, 4NT by responder is Roman Key Card Blackwood, even if
opener rebids 3NT. If responder wants to invite game with a 4NT
bid, he must start with a transfer instead of a jump takeout. A 4NT
bid by opener is RKCB unless he has bid 3NT, then 4NT, an obvious
sign-off.
A notrump bidder is allowed only one notrumper cue bid per auction.
Any further cue bid shows an ace. See NOTRUMPER CUE BIDS.
The degree of fit is important after responder shows two suits.
With S-Q3 H-A54 D-AK76 C-K1087, opener rebids 3NT when responder
jumps to 3S. If responder then bids 4C, this minimum hand becomes
a maximum. A jump to 6C is quite in order. With KQ of hearts
instead of the ace (more points, but less fit), opener would just
sign off with a 4NT bid over 4C.
Opener should bid aggressively with many controls and a ruffing
value. With S-A3 H-KJ7 D-A10987 C-A103 she should try for slam when
responder makes a jump takeout of 3H, even though it is a minimum
notrump opening. A raise to 5H is about right. Conversely,
secondary strength in side suits should be downgraded.
Strong jump takeouts by a passed hand are necessarily less
invitational to slam than those by an unpassed hand. In a minor
suit they tend to suggest that a minor suit game might be safer
than a notrump game.
Gerber is never used after a jump takeout response.