This Week in Bridge
(574) Fit-Showing Jumps
© AiB Robert S. Todd
Level: 9 of 10 robert@advinbridge.com
General
Jumping in the auction eats up a lot of bidding space, which is likely to make communicating with partner more difficult. Since our jump bid may make future communication more difficult, it should have a specific meaning. When partner opens the bidding, Responder’s jump shifts can be used to show a variety of different types of hands. We need to decide, as a partnership, which ones we want to use. We will choose different agreements for different situations.
Jumps by Responder are sometimes used as natural bids and sometimes used as conventional bids:
Strong Jump Shifts
Weak Jump Shifts
Invitational Jump Shifts
Reverse Flannery
Unusual Jump Shifts
Mixed Raises
Limit Raises
Game-Forcing Raises
Bergen Raises
Splinters, Mini-Splinters
And even more…
Let’s add one more to the list – Fit-Showing Jumps. These are an agreement that is common amongst expert players (in certain specific situations). Unlike many bridge conventions, this one is actually well-named. Let’s see how these Fit-Showing Jumps work.
Fit-Showing Jumps
A Fit-Showing Jump (FSJ) is a jump shift by Responder (or sometimes by Advancer) that shows a fit for partner’s suit AND a suit of our own, all with one bid.
There are lots of details that are good to discuss with partner before playing this convention:
How many cards in each suit?
o Generally, we have at least 9 cards in the two suits. Usually it is 4+card support for partner (4-5 or 4-6+…)
How many points should we have?
o Generally a FSJ shows a limit raise. Some partnerships allow them to be limit raise or better (LR+), but this is a special partnership agreement – discuss this with partner.
·Example Hand
♠ K432
♥ 5
♦ KQ876
♣ 974(Remember that we evaluate our hand for HCP, length points, and shortness points.)
Do we have a side suit quality requirement?
o If we have no Honors in our side suit, it doesn’t make a lot of sense to introduce that suit (unless we are extremely distributional), so most partnerships have some requirements for Honors in the side suit.
Why is this useful?
o By showing a fit, a side suit, and a good hand we allow Opener to evaluate fitting cards, wasted values, double fits, and more - this can allow for effective bidding, especially in competitive auctions.
Where do we use FSJ?
o FSJ can be used anywhere we and partner decide we prefer them to other possible jump shift agreements, but there are two common places they are frequently played:
- Jump Shifts by a Passed Hand - It doesn’t make a lot of sense for a passed hand to go
jumping around unless it has a new reason to. That is, a fit for the suit we opened.
- Jump Shifts by Advancer – Advancer frequently is involved in a highly competitive
auction. Being able to show all this about their hand in one bid can be very effective.
Conclusion
Fit-Showing Jumps (FSJ) can be an effective tool in communication with partner, but they are not without danger. There have been many famous mix-ups with FSJ – FSJ vs. splinters vs. natural bids.
Is a FSJ only a jump shift or can it be a double jump shift?
What if a jump shift is to game vs. below game?
There are lots of things to discuss with partner, so adopt these FSJ carefully and in specific bidding situations where you and partner are in clear agreement.