[kgr]

Below fit-jumps I play with my partner. System is pretty easy to remember (that is important for us). I think it is based on Bourke.
Anybody who would want to review this. I would appreciate feedback on this system! Using this system as the basis, what do you not like and would you change without making it too complex?
I especially have doubts about:
- point ranges we use
- 1M-3NT and 1M-4x: both partners will not be able to give more exact point range after this.

General remarks:
- points are distribution points
- Base system SAYC; Opening 1M: 5+ card
- Fit: 3+ card
- With fit and strong 5-card (at least 2 of 3 top honneurs) in another colour: first bid that 5-card.
Eg: 1H-2C-2NT-3H is strong 5card D and support H: start cues including serious 3NT.
- After singleton/ renonce is shown:
.... the next bid asks which suit is short and then the short suit is shown in sequence (+1: clubs, +2: diamonds, +3: other major).
.... not asking is sign-off
- RKC after partner has shown a renonce: Ace in renonce is not counted.

The system after 1M:
1. 2M : 6-9 pts, 3k M (followed by trials)
2. 3M: 0-7 pts, 4k M
3. 4M: to play
4. 2NT: 10-11 or 16+
.....Answers of opener in sequence:
.....3C: minimum (11-13)
.....3D: 14-15, unknown singleton
.....3H: 14-15, unknown renonce
.....3NT: 14-15, no singleton or renonce
.....3S/4x: cue, 16+
5. 3C: 12-15, no singleton or renonce
.....Answers of opener in sequence: (same sequence as over 2NT)
.....3D: minimum (11-13)
.....3H: 14-15, unknown singleton
.....3S: 14-15, unknown renonce
.....3NT: 14-15, no singleton or renonce
.....4x: cue, 16+
6. 3D: 12-15, unkown singleton
.....Ask singleton or sign-off in 4M
7. 3H: 12-15, unkown renonce
.....Ask renonce or sign-off in 4M
8. 3NT: 16+, unkown singleton
.....Ask singleton
9. 4x: 16+, renonce in x
.....cue, RKC
10. 4NT: RKC

[Chamaco]

I think the system has too many bids to show strong raises 12-15 or 16+ hcp, but too few to show the lesser hands.

I think it is good to have specific ways of raising with 6/9 hcp (or, better, 9 losers) and 4 trumps, and, where possible, to show IN WHICH SUIT these values are cncentrated.

Fitshowing jumps do the job well.

My suggestion is largely based on the use of Robson/Segal's raises, even NOT in competition, modified to include the generic splinter.
It does have les accuracy for all forcing raises, but should help more in the much more frequent weaker hands.

========================================

2NT = limit+ raise with 4+ trumps (or 3 trumps and high ODR)
3/4/5/6M = to play, generally preemptive

FITSHOWING JUMPS

At the 3 level
1H:2S/3m = fitshowing jump = mixed raise (8.5-9 losers) with concentrated values
1S: 3m/3H = fitshowing jump = mixed raise (8.5-9 losers) with concentrated values

At the 4 level
1H:3NT/4m = fitshowing jump = 7 losers hand with concentrated values (3NT = spades)
1S: 4m/4H = fitshowing jump = 7 losers hand with concentrated values

SPLINTERS

1H:3S and 1S:3NT = concealed splinter= about 12-15 hcp, 6-7 losers

[hrothgar]

Couple quick comments:

First and foremost, the term "fit showing jump" has an established meaning in bridge. Fit jumps are bids that show both the suit that you have bid, along with a fit for partner's suit. What you are describing is more properly described as a major suit raise strcutre or some such.

Now on to the content: I agree with Chamco that your structure is devoting way too much bidding space to some very infrequent and types. If you are seriously interested in optimizing your raise structure, I recommend getting a good hand generator like "Dealer". Program Dealer to accurately generate hands that match your 1♥/1♠ opening bids where LHO doesn't have an overcall available. You can use Dealer to calculate the expected strength held by responder. Focus your attention on the modal case. Make sure that your system is nice an accurate on "average" hands. The very strong and very weak ones will take care of themselves...

[kgr]

... thanks for the answers. The given guggestions would lead to a change in the system that we can't do now, because not enough time before start of competition.

One more question: Suppose you play the given system. How would you deal with intervention?:
- System off when opps intervene;
- system on until intervention of eg 2♥...
- system on only if partner jumps.
--- eg: 1♥-(2♣)-3♦ is system on
--- 1♥-(2♦)-3♣ is system off

[Chamaco]

- system on only if partner jumps.

It's the easiest thing to remember.

I would make one (optional) exception:
2NT is a generic strong raise even if nonjump (if you prefer, make it invitational+, but if this conflicts with your orignal system just use it the way you remember it better).

With a NT-oriented hand (that would have bid a natural 2NT) responder can double first.