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How do you overcall in this hand?

Poll: How do you overcall in this hand? (11 member(s) have cast votes)

What's your choice?

  1. Double (3 votes [27.27%])

    Percentage of vote: 27.27%

  2. 2H (8 votes [72.73%])

    Percentage of vote: 72.73%

Vote Guests cannot vote

#1 User is offline   lycier 

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Posted 2016-September-04, 00:46

This is a Gib hand. May I ask you a question ?


If you have a south hand, what's your choice?
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#2 User is offline   nullve 

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Posted 2016-September-04, 01:19

1N
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#3 User is offline   1eyedjack 

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Posted 2016-September-04, 02:09

I don't understand the poll choices
(1) X (understandable)
(2) 2H (described as aggressive weak jump overcall) (not understandable)

Against robots I agree with the above poster: 1N

Next choice would be 1H (not poll option), which I find from experience with robots to be their preference

Last choice would be X.

2H would not be considered

[EDIT] load a rubbish - as Stephen Tu says in next post I had seen 1C opener. Still stick with 1N
Psych (pron. saik): A gross and deliberate misstatement of honour strength and/or suit length. Expressly permitted under Law 73E but forbidden contrary to that law by Acol club tourneys.

Psyche (pron. sahy-kee): The human soul, spirit or mind (derived, personification thereof, beloved of Eros, Greek myth).
Masterminding (pron. mPosted ImagesPosted ImagetPosted Imager-mPosted ImagendPosted Imageing) tr. v. - Any bid made by bridge player with which partner disagrees.

"Gentlemen, when the barrage lifts." 9th battalion, King's own Yorkshire light infantry,
2000 years earlier: "morituri te salutant"

"I will be with you, whatever". Blair to Bush, precursor to invasion of Iraq
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#4 User is offline   Stephen Tu 

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Posted 2016-September-04, 02:48

I think you are misreading opening bid. 1 spade, not 1 club.
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#5 User is offline   The_Badger 

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Posted 2016-September-04, 04:41

hi lycier,

Whilst I agree with nullve's 1NT overcall, that's a big hand knowing the ♠ and opening bidder are under you. Just as a hand it comes out at 18.05 on Kaplan & Rubens hand evaluator.

2♥ could well be passed out I feel, when partner doesn't need much to make game a possibility.

On this occasion, I'll go for X. It's not ideal as it could present rebid problems. 2♥ looks the sensible overcall but I feel it is an underbid, in my opinion.
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#6 User is offline   iandayre 

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Posted 2016-September-04, 12:38

Only a near-maximum for an overcall. I want more than this to double and bid. 2H. 1NT?? Could work, not my style.
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#7 User is offline   lycier 

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Posted 2016-September-04, 16:46

Hi , many thanks to everyone.

1- If your choice is 1N, how about Gib?
I have to say fairly that Gib never choose 1N on Gib CC, but......see example hand.


Now see its result, fortunately 3♣N+2. However I think it is only for a good day, if in a bad day,



Its result is 3♣N-1

2- If the choice is 2♥, you will get 50% score in MP.

The result : 2♥S+1

3- If the choice is double, Gib will take a rediculous auction.


Here, very difficult to understand jump 3♥.
BTW, after 2♦, if South wants to raise 3♣, it shows " 4+♣,18-20TPs " on Gib CC.
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#8 User is offline   1eyedjack 

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Posted 2016-September-04, 22:14

I think that part of the problem is that after having overcalled 1N Gib allows South to back in with 2H on as few as 4 card h suit, making it hard for North to pass with only 2 card support.

Gib does this in a lot of situations when really you would only bid with 5.
Psych (pron. saik): A gross and deliberate misstatement of honour strength and/or suit length. Expressly permitted under Law 73E but forbidden contrary to that law by Acol club tourneys.

Psyche (pron. sahy-kee): The human soul, spirit or mind (derived, personification thereof, beloved of Eros, Greek myth).
Masterminding (pron. mPosted ImagesPosted ImagetPosted Imager-mPosted ImagendPosted Imageing) tr. v. - Any bid made by bridge player with which partner disagrees.

"Gentlemen, when the barrage lifts." 9th battalion, King's own Yorkshire light infantry,
2000 years earlier: "morituri te salutant"

"I will be with you, whatever". Blair to Bush, precursor to invasion of Iraq
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#9 User is offline   helene_t 

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Posted 2016-September-05, 04:24

Nihao Lycier,

I like your analyses, looking at different GIB solutions and comparing the results. Very helpful.

I am not sure what I would do. I think the hand is just good enough for double but I wouldn't argue with 2♥ or 1NT.

Obviously, if I started with double then 2♥ on the next round is enough.
The world would be such a happy place, if only everyone played Acol :) --- TramTicket
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#10 User is offline   jdonn 

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Posted 2016-September-05, 11:12

With GIB you should avoid making off-shape doubles like the plague. No amount of rebidding a suit will convince him you don't have support for all the suits. From what I am told, it is a very difficult thing to program for GIB to understand double then bid might be on a wide variety of shapes.

With the hand given, I would overcall 2H even playing with a human, so with GIB it's easy.
Please let me know about any questions or interest or bug reports about GIB.
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