convention solves the opening bidder's problem of how to
accurately describe a minimum 6-5 hand that has greater length in
the lower-ranking suit. For example, if you're opener with
you have a dilemma. If you open 1H, the best you can do is show
5-5 distribution by rebidding diamonds twice. If you instead open
1D, you can show your 6-5 pattern by rebidding 2H and 3H, but that
creates a reverse auction that shows significantly more high-card
The solution is to use the jump
in the higher-ranking suit as natural, limited and non-forcing.
With the hand above, you open 1D. Over partner's 1-level suit or
notrump response, you rebid 3H to show a 6-5 hand with minimum
requirements for using a jump-reverse are:
1-You're the opening bidder and have 6-5
distribution, with 6 cards in the lower-ranking suit.
2-You have the playing strength (but not
the high-card values) to play at the 3-level opposite a minimum
response. This means your suits should be strong -- ideally, most
(or all) of your honor cards will be in your long suits. For
example, a jump-reverse is not recommended with a hand like ♠K
With this, just open 1C and rebid 2C.
3-You have minimum high-card values
(10-15 pts.) -- a hand that's worth an opening bid, but has less
than full reversing values (16-17 pts.).
4-Responder makes a 1-level bid that
bypasses your 5-card suit -- i.e. you must go to the 2-level to
bid your second suit. (You may also use the jump-reverse if an
opponent's overcall has forced you to the 2-level, whether or not
partner has responded.)
jump-reverse auctions that carry this meaning include:
Note that you do not
use the jump if partner's response leaves you room to show your
second suit at the 1-level. If you open 1D with
♣K4 and partner responds 1H, a jump to 2S should be a
strong jump shift (19+ pts.). With the hand above, you can show
your pattern and minimum values by simply rebidding 1S and then
Note also that you do not promise
6-5 distribution if you jump after partner has made a negative
double. After the auction 1C by you -- (1S overcall) -- Double by
partner, your jump to 3D or 3H would be a simple value bid,
promising at least 4-card support and invitational strength.
Most pairs who play this
convention choose not
to apply it if partner makes a 2/1 response, especially in a 2/1
forcing-to-game system. After 1D by you -- 2C by partner, it's
best to rebid only 2H with ♠A ♥QJ976
♣4. This saves space and allows you to use a jump to 3H here
as a splinter (good club support, singleton heart, big hand).
jump-reverse is not forcing. Responder can pass or take a signoff
preference back to opener's first suit if he has no interest in
game. In general, it's assumed that opener has given a complete
description of his hand, so it's up to responder to place the
Responder should evaluate his
holdings in opener's suits and stretch to bid game if he has
fitting cards. Based on the Losing Trick Count, opener will
usually have a hand with 4 (possibly 5) losers. Responder should
bid a major-suit game if he has a fit and
can cover 1.5-2 of opener's losers. He should bid a minor-suit
game if he has a fit and can cover 2.5-3 of opener's losers.
After the auction
the meanings of responder's rebids are:
1-Pass = a weak, possibly non-fitting hand that prefers
opener's second suit -- ♠KQ1032 ♥763
♣54. Partner will most often be 1-1 in the outside suits, so
you can't count your kings as covering any of his losers.
2-Preference to opener's first suit (4C)
= a weak, possibly non-fitting hand that prefers opener's 6-card
suit. This is a signoff, and opener should pass.
3-Game bid in either of opener's suits (4H
or 5C) =
to play. Opener should always pass. In the auction above, if
you hold ♠A9854 ♥1043
♣K9 , you have at least two of partner's losers covered (a
club and a spade, plus a possible club ruff), so you should bid
4H. Similarly, with ♠A9854 ♥10
♣K97 , you have at least 3 losers covered (a spade, a club
and 1-2 heart ruffs), so bid 5C.
4-Rebid of your suit (3S
or 4S) = to play, showing great length in your suit and
probably no fit for opener's suits.
5-3NT = to play.
6-4NT = key-card Blackwood for opener's second
7-Fourth suit (4D)
= a slam-try in opener's first
suit. Opener should cuebid a below-game first-round control (4H or
4S) if he has one, or he can use key-card Blackwood if he wants to
immediately accept the slam try. Any subsequent Blackwood bid by
opener or responder is key-card for opener's first suit.
Alternatively, if opener has a
first-round control in the fourth suit and
a cuebid of that suit would be past game (as 5D would be in the
auction above), you can agree to use opener's 4NT rebid as a
cuebid of the fourth suit. After 1C-1S-3H-4D, opener's 4NT would
show an ace or void in diamonds, but no first-round control of
hearts or spades.
Yet another variation is to use
responder's fourth-suit bid as key-card Blackwood for opener's
second suit. Partnerships should discuss these auctions and decide
which treatment they prefer.
8-Below-game raise of opener's
second suit (1C-1S-3D-4D)
= invitational to game, showing a fit and a hand that can cover 2
convention can be a very valuable addition to almost any Standard
It's especially effective in finding short-point games and slams,
and can have preemptive value. Using the jump-reverse as
non-forcing does not require you to give up any other meanings, as
the jump is an otherwise idle bid. If opener has a very strong
high-card hand, there's no need to jump -- he can still show his
6-5 distribution by making a forcing 2-level reverse and then
rebidding his second suit.
The main disadvantage is that
although the jump rebid gives a close-to-perfect description of
opener's hand, it takes the auction very high, very fast. If
responder has a weak, non-fitting hand with shortness in opener's
second suit, the auction will be propelled to the 4-level when
he's forced to take a preference back to the first suit. To make
best use of this convention (and avoid disasters), opener and
responder must have advanced hand-evaluation skills and exercise