[1eyedjack]

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MP, Instant, 35

If South has 4 card Club support he must also have 4 Diamonds.

If South lacks 4 card Club support he may yet have 4 Diamonds.

Whatever, South will have at least as many Diamonds as Clubs, and quite possibly more.

North does not have the 6th Heart promised for the Heart rebid, but neither is he embarrassed for an alternative.

So he/I got lucky and land in a 9 carder. Hats off to those who raised to 5C after the same start.

[iandayre]

It's easier than that. If S had only 3 D, must be 4-4 in the majors. S has not only denied 4 ♥, but has denied 3 (no support double). Why N could never manage to support D is anyone's guess. I would call it a bug.

[Bbradley62]

iandayre, on 2016-June-21, 14:51, said:

It's easier than that. If S had only 3 D, must be 4-4 in the majors. S has not only denied 4 ♥, but has denied 3 (no support double). Why N could never manage to support D is anyone's guess. I would call it a bug.

I may have to research this, but I think Support Doubles only apply in situations where you could have supported at the 2 level but chose to support double instead. I wonder how strong GIB thinks South would have to be to support over 2♠.

[lycier]

Bbradley62, on 2016-June-22, 21:11, said:

iandayre, on 2016-June-21, 14:51, said:

It's easier than that. If S had only 3 D, must be 4-4 in the majors. S has not only denied 4 ♥, but has denied 3 (no support double). Why N could never manage to support D is anyone's guess. I would call it a bug.

I may have to research this, but I think Support Doubles only apply in situations where you could have supported at the 2 level but chose to support double instead. I wonder how strong GIB thinks South would have to be to support over 2♠.

I don't want to see both of you in times of trouble, I would try to research this hand so as to find the reasons on this issue.

- Hand-1 It normally goes :

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This hand shows Gibs have good ability to handle with two suited hand if only there is a interference at 1-level.

- Hand-2 if there is a interference at two level, it is very difficult for Gibs to do next because Gib CC has limited the next bidding including its next range.

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Here I can tell you the exact Gib CC for East after 2♠ :


double=3+♦,1-♥,17-21hcp,biddable ♠,22-TPs.

3♣=4+♣,4+♦,3-♥,21-hcp,17-22TPs

3♦=opener rebid --- 6+♦,3-♥,17-22tps,

3♥=3+♦,4+♥,15-18TPs,

3♠=3+♦,21-hcp,20-22TPs.

3nt=11-21hcp,solid 7-card ♦,12-22tps,stop in ♠

4♣=splinter raise

5♣=4+♦,11-21hcp,biddable ♣ ,3-card ♦,12-22tps

5♦=11-21hcp,biddable♦,12-22tps.

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The conclusion
1- Basic Gibs are better in many hands.
2- In fact, generally speaking, Gib CC are very good.
3- If we can change the definition on East rebid-3♣, it is very easy for Gibs to resolve this issue. So the definition of rebid-3♣ is not good.(Here I can't said more, otherwise Stephen Tu will say my nonsense. The bridge game should be happy.)

[iandayre]

Bbradley62, on 2016-June-22, 21:11, said:

I may have to research this, but I think Support Doubles only apply in situations where you could have supported at the 2 level but chose to support double instead. I wonder how strong GIB thinks South would have to be to support over 2♠.

Once again I misread a suit signal. Thought the overcall was 2C. Support doubles would not have applied. This doesn't change the fact that North's 4C bid is from another planet.