[lycier]

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1- Even though I have 17hcp,I can defeat opp's 3♥ contract.However the explanations of 3♥ is ...20+hcp..".
2- Gib E's double is not good.It usually promises some high cards in ♠,never ♠J in it.
3- My double have shown 2-♠,why Gib E overcall 4♠ only with 4TPs?Gib E is asking for trouble,indeed.

[Stephen Tu]

A lot of strange bidding after 3♥ to reach an almost normal spot . If it were both non-vul it would actually be the par spot.

The thing is it's rather rare for people to double in your position, because 3♥ is a forcing call. Normally one passes and waits for the opps to hopefully get too high, and not double them until they've actually bid a game, not warn them that things might be breaking badly and that you might be itching to double them, which might induce them to stop lower than they would if you kept silent. So it's normal for there not to be much definition of what this double means. After the preempt I guess your doubles should simply all be penalty and East should never do anything other than pass or double. But it's unclear how the double should be defined.

3♠ of course is really weird with 6-6, and the double of 3♠ should further define the hand in some way. I don't know if it should be lead directing, after all 2♠ was already bid. With some of my partners I play such doubles as anti-lead directing.

[cloa513]

 Stephen Tu, on 2015-March-26, 14:02, said:

A lot of strange bidding after 3♥ to reach an almost normal spot . If it were both non-vul it would actually be the par spot.

The thing is it's rather rare for people to double in your position, because 3♥ is a forcing call. Normally one passes and waits for the opps to hopefully get too high, and not double them until they've actually bid a game, not warn them that things might be breaking badly and that you might be itching to double them, which might induce them to stop lower than they would if you kept silent. So it's normal for there not to be much definition of what this double means. After the preempt I guess your doubles should simply all be penalty and East should never do anything other than pass or double. But it's unclear how the double should be defined.

3♠ of course is really weird with 6-6, and the double of 3♠ should further define the hand in some way. I don't know if it should be lead directing, after all 2♠ was already bid. With some of my partners I play such doubles as anti-lead directing.

The 3♠ cue is not defined all- its the opening hand definition- no wonder GIB just bids it. It would be better to just include impossible to be bid after a penalty double of partner's suit- then clubs would be the straightforward bid, partner corrects to diamonds- a make contract and sacrifice into spades looks reasonable. Its easy to imagine that there could be minor suit with North-South- just give all the spade honours to East-West and 6/6 Minor suits in North and not too much Heart honours in South's hand.

Lycier given you know how crazy/badly programmed GIB is, its one of those times to keep quiet in the bidding- your position is highly suggestive of North having long minors and with expert/good intermediate human opponent you should also keep quiet-they'd be sure to get the minor contract.

[lycier]

 cloa513, on 2015-March-26, 18:38, said:

Lycier given you know how crazy/badly programmed GIB is, its one of those times to keep quiet in the bidding- your position is highly suggestive of North having long minors and with expert/good intermediate human opponent you should also keep quiet-they'd be sure to get the minor contract.

yes,yes.
I fully agree with you,and I know Gib could get a best spot,so I have to make double for interference.
People often say that "No Double,No Trouble", in fact,I just want to test Gib ability to anti-interference.