[mgoetze]

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Given that barmar cited "what the hoi polloi play" as the reason for GIB playing Capp, I would be most interested in the rationale for Soloway Jump Shifts.

Anyway, what does the robot think I'm doing all this cuebidding for - just for fun? Can't it see that the ♠K is enough for 7NT?

I would be most obliged if someone could propose a sensible auction in the GIBberish bidding system leading to 7NT. By "sensible", I don't mean 1♠-3♣-4NT-5♠-7NT or 2NT-7NT, which is how it was "found" at some other tables.

[uday]

Interesting. i think N would have to cue 4H to have a chance?

[barmar]

Looks like your bidding was completely in line with GIB's system. It just doesn't have many good rules for high level bidding to find grands.

We used to allow simulations to fill in the gaps in these rules, but this caused GIB to frequently raise slams to grands, so we disabled simulations.

It can't cue bid 4♥ -- that shows a ♥ splinter and ♠ support.

As for why GIB plays Soloway Jump Shifts? I guess because the designers of GIB's system felt that WJS is really dumb, despite its popularity among the masses. It's similar to the choice of 2/1 even though so many BBO players play SAYC.

FYI, when GIB was first written, its system was MOSCITO.

[mgoetze]

barmar, on 2012-February-14, 16:18, said:

We used to allow simulations to fill in the gaps in these rules, but this caused GIB to frequently raise slams to grands, so we disabled simulations.

Maybe you need to reallow simulations when partner is cuebidding at the 5-level.

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As for why GIB plays Soloway Jump Shifts? I guess because the designers of GIB's system felt that WJS is really dumb, despite its popularity among the masses.

So how about Bergen, Reverse Flannery, Invitational Jump Shifts, Fit Jumps, Minisplinters, or anything that people actually know how to play?

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FYI, when GIB was first written, its system was MOSCITO.

I knew that, and I would love the opportunity to play Moscito with GIB.

[mycroft]

But 5♣ is a "nothing" bid.

Soloway Jump Shifts, the way I learned and teach them, show one of three hands:
- That suit and that suit - basically, it's trump or NT
- That suit and your suit
- a "too big" NT range (for whatever value that is).

That doesn't seem to be the explanation given for 3♣. As a result, I would expect 4♥ over 4♣ rather than 5♣; I would expect 3♦ over 3♣ rather than 4♣ (it can't be a suit, because partner won't *have* that suit). I think either of those would get there eventually (probably, yes, through 4NT and then 5NT to find the right K).

[Cthulhu D]

If GIB does have a full set of rules for terroist MOSCITO, why not have that enabled as a 'beta' option with no support?

I'd actually really love that feature - I'd like to learn MOSCITO but none of my regular partners are willing to put in the effort, and GIB doesn't care how slow or badly I play while learning ;P

[Bbradley62]

mycroft, on 2012-February-14, 17:00, said:

Soloway Jump Shifts, the way I learned and teach them, show one of three hands:
- That suit and that suit - basically, it's trump or NT
- That suit and your suit
- a "too big" NT range (for whatever value that is).

That doesn't seem to be the explanation given for 3♣...

According to GIB's published system notes:

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GIB plays Soloway Strong Jump Shifts by an unpassed hand in uncontested auctions. A jump shift shows one of the following types of hands:
1.Strong rebiddable suit, 17+ total points, 4+ controls (A=2, K=1), no side 4-card suit
2.Solid suit, 17+ total points, 4+ controls, may have a side 4-card suit
3.Rebiddable suit, 18+ HCP, 4+ controls, 5332 or 6322 shape.
4.Rebiddable suit, 17+ total points, 4+ controls, 4-card support for opener's suit

This hand appears to be from description 1.

[barmar]

mycroft, on 2012-February-14, 17:00, said:

But 5♣ is a "nothing" bid.

Soloway Jump Shifts, the way I learned and teach them, show one of three hands:
- That suit and that suit - basically, it's trump or NT
- That suit and your suit
- a "too big" NT range (for whatever value that is).

That doesn't seem to be the explanation given for 3♣. As a result, I would expect 4♥ over 4♣ rather than 5♣; I would expect 3♦ over 3♣ rather than 4♣ (it can't be a suit, because partner won't *have* that suit). I think either of those would get there eventually (probably, yes, through 4NT and then 5NT to find the right K).

GIB can't describe "A or B or C", so the description of 3♣ is the minimum common features of all of them. You can't find out which it is until its next bid.

A 3♦ rebid by opener means "I don't have a fit in ♣, but I have a chunky ♦ suit". This should be helpful to responder deciding whether to bid NT.

A 4♥ rebid by responder is only used in the case of "that suit and your suit", to show shortness in ♥ in addition to your suit.

I thought I put most of these details in the system description page when I added the section on Soloway JS.

[mycroft]

I'd really like a bid that sets partner's suit before we get to a clearly passable 5♣, that's all. If I have to raise partner past 3NT to agree clubs, and if partner has to bypass all the other bids to deny support for opener's suit, it makes finding slam really hard.

Even if 3♦ is primarily "probe for NT", 3♦, then 4♣ is clearly "club slam try with a diamond control, ignore previous message", and we're miles ahead of 4♣ directly.

[mgoetze]

mycroft, on 2012-February-16, 11:05, said:

Even if 3♦ is primarily "probe for NT", 3♦, then 4♣ is clearly "club slam try with a diamond control, ignore previous message", and we're miles ahead of 4♣ directly.

And this is exactly the sort of thing that the GIB rule system is horrible at expressing.