[iandayre]

Your hand is AKQJTx, xx, A, AJTx

[1eyedjack]

Sorry I don't understand the options. Who bid 3C? Partner? Did Partner bid 2S and RHO 3C?

[Bbradley62]

It seems clear that if you open 2♣, there is no interference and partner bids 2♦ and then he bids 3♣ over your 2♠ rebid.

[mgoetze]

I would open 1♠, but if I did open 2♣, and partner went on to bid 3♣, why would I not raise clubs?

[Stephen Tu]

 mgoetze, on 2014-October-22, 18:20, said:

I would open 1♠, but if I did open 2♣, and partner went on to bid 3♣, why would I not raise clubs?

Because 3♣ might be defined as an artificial double negative?

[Bbradley62]

Since there are multiple choices for bidding after opening 2♣, maybe there should be multiple choices for "your plan" after opening 1♠. Starting with, what do you do after partner's forcing 1N... Based on the choices provided, I'm guessing that CHO passed 1♠, but we still should have had a plan...

[mgoetze]

 Stephen Tu, on 2014-October-22, 18:30, said:

Because 3♣ might be defined as an artificial double negative?

All the more reason to open 1♠ then...

[iandayre]

BBradley is correct. There is no opponents bidding. And yes 3C is an artificial double negative.

BBradley's point about rebids after a 1S opener and 1NT response is valid but 3C seems to stand out to the point where I wouldn't consider it much of a problem.

[iandayre]

Thanks to those who voted. 1S, as BB correctly guessed, was passed out. Those who chose option #3, including myself, were greeted with Blackwood. Given the double negative, I suspected what was going on and deducted an Ace, staying in 5S which was down one - all the others reached 6. Only one player - JMunday - chose option 2 and got to play in 4S.

The lesson - which GIB veterans like myself should have known - it that it is so often deadly to overbid, or even bid what with a human partner would be normal aggressive bidding.

[Bbradley62]

Certainly, Mr. Munday understands GIB... but, it's also true that his sequence is the one that conforms to GIB's definitions: he showed 23+ total points, whereas you (and I in the poll) showed 25+, according to the provided descriptions. South, in fact, has 22, but I'll take an extra one for the two JT combinations. As a minor comment, it might be nice if the 3♠ bid was explained as 23-24, since the other sequence is 25+. I wonder what a direct 3♠ over 2♦ would be.

[Bbradley62]

Okay... I got a hand today that allowed me to check all of these... The following sequences:

• 2C-2D-2S
  
• 2C-2D-3S
  
• 2C-2D-4S

All show 6+S; 23+. Are there any differences among them?

[iandayre]

Well certainly there are differences, I doubt if GIB is programmed to be aware of them.

2S is the generic bid with 5+ Spades. 3S sets trump and asks for cue bidding. (Show an ace, bid 3NT with any side kings, raise to 4 with neither) 4S is a hand a trick better than a 4S preempt perhaps AQJTxxxx, AK, xx, x.

[iandayre]

deleted

[Bbradley62]

 iandayre, on 2014-October-24, 18:35, said:

Well certainly there are differences, I doubt if GIB is programmed to be aware of them.

2S is the generic bid with 5+ Spades. 3S sets trump and asks for cue bidding. (Show an ace, bid 3NT with any side kings, raise to 4 with neither) 4S is a hand a trick better than a 4S preempt perhaps AQJTxxxx, AK, xx, x.

Is this an explanation of what is standard, or of what GIB plays?

[iandayre]

Definitely the former. Like you I don't know how GIB would interpret the 3♠ or 4♠ jumps. And of course playing "human has best hand" GIB never has a good enough hand to open 2C.