[soldatoJ]

Say
1♠-1N(forcing 1N, playing 2/1)
3♣/♦/♥

or

1♥-1♠/N
3♣/♦

(Assume the Jump shift is Game Forcing)

How to show First Suit fit, have CueBid, nothing to cuebid sequence?
How to show Second Suit fit, have CueBid, nothing to cuebid sequence?
How to show new suit?
Can there still be splinter in new suit or splinter in first suit, with super fiit in 2nd suit?

[mishovnbg]

Hi soldatoJ!
If you decide to play natural system, you must get used to the idea of unprecise but flexible bidding. Bids in natural system have often several meanings, which bidder clarify in next one/several rounds. Normally below 3NT all is oriented to catch it, while above 3NT bids are for slam if they are not at game in GF situation like in examples. Jumping in unbid suit normally show splinter, while real suit can be bidded without jump as stopper+ and be repeated to show nat suit. Raising p minor at 4 level show slam imterest of course. When both majors are bidded, then 4♣ show slam interest with ♥ support, while 4♦ show slam interest with ♠ support.
Sorry but for me is too boring to describe so many sequences. Pick up one example and I will describe it.
Misho

[helene_t]

Strong jump shifts are mainly advocated by Mike Lawrence, who also advocates that a 2/1 response should not be unconditionally GF. In that case, strong jump shifts make sense. It also means that less game-going hands can be bid via a 2/1-response, since repeating the suit may not be forcing.

If a 2/1 response is unconditinally GF, however, a jump shift may be reserved for very specific hands, which has consequences for the rebid scheme.

Also, if a 2/1 response promises a 5-card, more game-going hans can be bid that way. So it all depends on the definition on the 2/1 response.

[Chamaco]

helene_t, on May 27 2004, 07:48 AM, said:

Strong jump shifts are mainly advocated by Mike Lawrence, who also advocates that a 2/1 response should not be unconditionally GF. In that case, strong jump shifts make sense. It also means that less game-going hands can be bid via a 2/1-response, since repeating the suit may not be forcing.

If a 2/1 response is unconditinally GF, however, a jump shift may be reserved for very specific hands, which has consequences for the rebid scheme.

Also, if a 2/1 response promises a 5-card, more game-going hans can be bid that way. So it all depends on the definition on the 2/1 response.

I think what Helene refers to is about JS by responder.
In the example of this post, however, JS is made by OPENER, so it is another matter.

However, just a point here on responder's JS according to Lawrence.
As far as I can tell from Lawrence's books, the main point of jumps in his phylosophy is not so much to show strength in hcp (this can be done in a number of way even in Lawrence's system), but to show suit quality and honors concentration. This is actually very useful, because it is much harder to show honors concentration and describe well your hand by some normal game forcing sequence: you may have scattered GF values, so pard will not visualize your hand as well as you do after a jump

Strong jumpshift in majors have the advantage of setting the trump suit, even if pard is not happy with it, so from now on one effectively saves one or 2 bidding level (those that usually is consumed to convince pard that your major should be trump even if he is void) to start cuebidding and /or describing hand further.

I think strong jumpshifts at the 2 level are useful even if u play 2/1 as absolute GF.

Jumpshift by responder in minors at the 3 level are another beast: first, you want to play in a minor much less often, second, they are so useful for conventional raises (especially of majors, whichever u play) that their frequency and usefulness outscore that of the strong JS.

[Flame]

First there is the qeustion of what is natural by responder.
IMO
a new suit at the 3 level is natural.
a new suit at the 4 level - this is not easy i think there is a case to play this natural too, especially if we are in a 100% forcing to game situation, the other option is to play them as a cue for the second suit, why the second ? because my rule is , when a cue could be for 1 of 2 suits its is always for the suit which is harder to make a forcing support for. for example 1s-1nt-3d , now 3s is for spade and looking for slam and 4c is for diamonds, because its "easier" to support 3s then 4d (lower level)

[GijsH]

soldatoJ, on May 26 2004, 11:44 PM, said:

How to show First Suit fit, have CueBid, nothing to cuebid sequence?
How to show Second Suit fit, have CueBid, nothing to cuebid sequence?
How to show new suit?
Can there still be splinter in new suit or splinter in first suit, with super fiit in 2nd suit?

No one was answering your question, so I'll try to do that:

1. show 1st suit fit: a GF is established, so Principle of Fast Arrival applies:
3-in-opener's major: 3-card support, 10-12 hcp
4-in-opener's major: 3-card support, 6-9 hcp

2. show 2nd suit fit: opener's 2nd suit can be a 4card:
4-in-opener's minor: 4card support, FORCING, unbalanced

3. New suit: just bid it, this shows a 6card, 6-10 hcp, denies support for opener's major

4. Splinter: NO. Never splinter or queue shortage in opener's 1st suit. Those partial misfit hands are not worth much.
1♠-1NT, 3♣-4♦: This should agree ♣ and show a ♦queue with slam interest, something like:
♠xx ♥xx ♦AQxx ♣KJxxx
A subsequent ♠ queue by responder show specifically Qx.

[Fluffy]

After 3 level rebid by opener almost all bids are natural.

After 1M-1NT-3♦, now 4♣ is own suit, but can be used as first cue bid with fit in the minor, partner will realise when you rectify to 5/6♦.

After 1♥-1♠-3♣, now 3♦ is 4th suit.

After 1♥-1NT-3m, now 3♠ shows fit in the minor with ♠ stopper, asking to play 3NT, or first cuebid, reopening later.