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Unclear auction EBU, Matchpoints

#1 User is offline   CamHenry 

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Posted 2012-August-29, 01:11



None vulnerable, N deals; matchpoints. 2 is alerted; partner asks and is told it's a transfer, and then bids 3. You have no agreement about what a double would mean here, and therefore you can't deduce what 3 shows in any detail.

Do you bid 3NT, pass, or find some other call?
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#2 User is offline   Trinidad 

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Posted 2012-August-29, 01:56

It obviously depends on the agreements. To me 3 would be game forcing (since this would be a good/bad auction and partner has shown "good"). I would bid 3NT.

But with different agreements, 3 may well be a sign off and pass would be obvious.

Rik
I want my opponents to leave my table with a smile on their face and without matchpoints on their score card - in that order.
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#3 User is online   Cyberyeti 

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Posted 2012-August-29, 02:04

View PostTrinidad, on 2012-August-29, 01:56, said:

It obviously depends on the agreements. To me 3 would be game forcing (since this would be a good/bad auction and partner has shown "good"). I would bid 3NT.

But with different agreements, 3 may well be a sign off and pass would be obvious.

Rik

Basically agree with this. If no agreements, I probably bid 3N.
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#4 User is offline   campboy 

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Posted 2012-August-29, 05:28

Absent other agreements I would expect 3 to be forcing and weaker hands with hearts to pass hoping to bid 3 next round, so I'm bidding 3NT too.
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#5 User is offline   gnasher 

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Posted 2012-August-29, 05:38

I'd assume it was non-forcing. He had an easy 2 bid if he wanted to set up a force.
... that would still not be conclusive proof, before someone wants to explain that to me as well as if I was a 5 year-old. - gwnn
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#6 User is offline   ahydra 

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Posted 2012-August-29, 05:49

3NT

ahydra
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#7 User is offline   Trinidad 

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Posted 2012-August-29, 08:28

View Postgnasher, on 2012-August-29, 05:38, said:

I'd assume it was non-forcing. He had an easy 2 bid if he wanted to set up a force.

Good point. I must have been asleep. (Good/Bad obviously doesn't apply if you can force "naturally" below 2NT.)

Rik
I want my opponents to leave my table with a smile on their face and without matchpoints on their score card - in that order.
The most exciting phrase to hear in science, the one that heralds the new discoveries, is not “Eureka!” (I found it!), but “That’s funny…” – Isaac Asimov
The only reason God did not put "Thou shalt mind thine own business" in the Ten Commandments was that He thought that it was too obvious to need stating. - Kenberg
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#8 User is online   Cyberyeti 

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Posted 2012-August-29, 12:33

View Postgnasher, on 2012-August-29, 05:38, said:

I'd assume it was non-forcing. He had an easy 2 bid if he wanted to set up a force.

Would assume the reverse, the non forcing hand can X (no agreement, we normally assume it's what the unalerted bid means which in the UK is hearts).
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#9 User is offline   CamHenry 

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Posted 2012-August-29, 14:09

OK, there's no clear consensus on the bid at this stage. The actual ruling is on a misinformation case. The auction had run:



2 was not alerted. I was called at the end of the auction, when S said "I should have alerted 2 as a transfer". E said that, with correct information, she'd have bid 3 over 2; since this was before she had any idea of the full layout I see no reason to doubt the statement.

Obviously the correct ruling is that she can take back her final pass, and then she probably balances with 3. Unfortunately I'm rusty, and denied her this option, so now I have to make a ruling. 3 goes either 1 or 2 off, while 2 made 140 at the table. 3NT goes badly enough that, if it had been a clear-cut bid on the W hand, I'd have ruled "no damage".

Is this ruling correct (modulo my failure to get it right first time!)?

Thanks
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#10 User is online   Cyberyeti 

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Posted 2012-August-29, 14:30

View PostCamHenry, on 2012-August-29, 14:09, said:

OK, there's no clear consensus on the bid at this stage. The actual ruling is on a misinformation case. The auction had run:



2 was not alerted. I was called at the end of the auction, when S said "I should have alerted 2 as a transfer". E said that, with correct information, she'd have bid 3 over 2; since this was before she had any idea of the full layout I see no reason to doubt the statement.

Obviously the correct ruling is that she can take back her final pass, and then she probably balances with 3. Unfortunately I'm rusty, and denied her this option, so now I have to make a ruling. 3 goes either 1 or 2 off, while 2 made 140 at the table. 3NT goes badly enough that, if it had been a clear-cut bid on the W hand, I'd have ruled "no damage".

Is this ruling correct (modulo my failure to get it right first time!)?

Thanks

While I would bid 3N I don't think it's obvious so 3 is in the frame. Is there any chance NS will compete to 3 or double 3 ?

Do you have to rule director error about the final pass and give the affected side an artificial good score ?
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#11 User is offline   CamHenry 

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Posted 2012-August-29, 15:21

View PostCyberyeti, on 2012-August-29, 14:30, said:

While I would bid 3N I don't think it's obvious so 3 is in the frame. Is there any chance NS will compete to 3 or double 3 ?

Do you have to rule director error about the final pass and give the affected side an artificial good score ?


S has limited her hand and they have an agreement not to pull the double on decent hands. N is maximum for his pull, with KJxxx/ATx/xx/xxx, so might find a double of 3. I play with the N in question at times, and he's not prone to making penalty doubles of anything other than 1NT and game contracts. It is plausible N will compete to 3, but unlikely - he's already demonstrated that he has doubts about the strength of the hand, and on the sequence likely to have arisen (where E bids 3 over 2) S will never reveal the 4-card spade support (would you, when partner's weak and you have KQ9 of hearts over the bid?).

As for the director error - I am attempting to follow "resolving doubtful points in favour of the NoS", and whether NS would compete to 3S or EW bid 3NT are both doubtful points.
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#12 User is offline   lalldonn 

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Posted 2012-August-29, 15:28

I'd assume it's forcing since he could have doubled 2 just to show hearts without implying particular strength, same as without my initial double. I don't think it's practical to use 2 for lots of forcing hands with different shapes since either opponent might bid 3 before you get a chance to clarify.
"What's the big rebid problem? After 1♦ - 1♠, I can rebid 1NT, 2♠, or 2♦."
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#13 User is online   Cyberyeti 

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Posted 2012-August-29, 17:16

View PostCamHenry, on 2012-August-29, 15:21, said:

As for the director error - I am attempting to follow "resolving doubtful points in favour of the NoS", and whether NS would compete to 3S or EW bid 3NT are both doubtful points.

Well you've made an error, but it sounds like you're going to rule the same thing that would have happened without the error by a different route, so you've not damaged them.
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#14 User is offline   lamford 

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Posted 2012-August-29, 17:46

View PostCyberyeti, on 2012-August-29, 12:33, said:

Would assume the reverse, the non forcing hand can X (no agreement, we normally assume it's what the unalerted bid means which in the UK is hearts).

It seems East has four ways to bid hearts. 2S and then 3H over whatever partner or the opponents bid. Double then 3H over the oppo 2S, 2NT (perhaps pick a minor) then 3H when partner picks, and the immediate 3H. On PFA principles, I agree with gnasher that 3H is non-forcing, and would routinely pass it. I would always bid game if partner started with 2S, as that should be the strongest option. Perhaps we have to plug the hand into the Rigaliser to find out which of 2NT followed by 3H and double followed by 3H is the stronger, and we might get an intelligent response.

But back to the MI case. We don't have the East hand, but it sounds from his later silence that he had a 3H bid over an alerted 2H. You then have to decide how often NS get to 3S. A bit of work to remove your rustiness. Actually, all you need to do is poll ten people for East and the same ten for South. And there is a way to get a complete hand diagram, by the way, if you read the instructions carefully.
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#15 User is offline   aguahombre 

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Posted 2012-August-29, 19:34

View Postlalldonn, on 2012-August-29, 15:28, said:

I'd assume it's forcing since he could have doubled 2 just to show hearts without implying particular strength, same as without my initial double. I don't think it's practical to use 2 for lots of forcing hands with different shapes since either opponent might bid 3 before you get a chance to clarify.

Exactly. Furthermore, East (who did not mention he would have done that) most likely has a hand which should have doubled 2H, rather than taking any other action on the first or last round. It seems that the failure to alert has gained the NOS, not damaged it. They were protected from themselves. NEXT.
"Bidding Spades to show spades can work well." (Kenberg)
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#16 User is online   Cyberyeti 

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Posted 2012-August-30, 02:55

View Postlamford, on 2012-August-29, 17:46, said:

It seems East has four ways to bid hearts. 2S and then 3H over whatever partner or the opponents bid. Double then 3H over the oppo 2S, 2NT (perhaps pick a minor) then 3H when partner picks, and the immediate 3H. On PFA principles, I agree with gnasher that 3H is non-forcing, and would routinely pass it. I would always bid game if partner started with 2S, as that should be the strongest option. Perhaps we have to plug the hand into the Rigaliser to find out which of 2NT followed by 3H and double followed by 3H is the stronger, and we might get an intelligent response.

But back to the MI case. We don't have the East hand, but it sounds from his later silence that he had a 3H bid over an alerted 2H. You then have to decide how often NS get to 3S. A bit of work to remove your rustiness. Actually, all you need to do is poll ten people for East and the same ten for South. And there is a way to get a complete hand diagram, by the way, if you read the instructions carefully.

Many people will not bid 2 with a single suited hand on principle in case opps raise their suit and you're forced into a really awkward decision. This is not desperately likely in this particular auction, but certainly for us general meta agreements cover it and we won't be single suited.
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#17 User is offline   CamHenry 

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Posted 2012-August-30, 03:15

View Postaguahombre, on 2012-August-29, 19:34, said:

Exactly. Furthermore, East (who did not mention he would have done that) most likely has a hand which should have doubled 2H, rather than taking any other action on the first or last round. It seems that the failure to alert has gained the NOS, not damaged it. They were protected from themselves. NEXT.


I think you're giving too much credit to the players in question: it is not a strong club. E told me at the time that she'd have bid 3 over 2, and reaffirmed this afterwards. The score after the infraction was NS +140, rather than NS +50 or +100; I do not see how this is a gain to EW.
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#18 User is offline   aguahombre 

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Posted 2012-August-30, 07:34

View PostCamHenry, on 2012-August-30, 03:15, said:

I think you're giving too much credit to the players in question: it is not a strong club. E told me at the time that she'd have bid 3 over 2, and reaffirmed this afterwards. The score after the infraction was NS +140, rather than NS +50 or +100; I do not see how this is a gain to EW.

That is exactly my point. This player would have bid 3, and if we read this thread, then they would be playing 3NT, most likely doubled. Your math is for an unlikely continuance. The NOS gained by being oblivious to the meaning of 2H because they are oblivious to what they should have done if they knew it was a transfer.
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#19 User is offline   CamHenry 

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Posted 2012-August-30, 10:11

View Postaguahombre, on 2012-August-30, 07:34, said:

That is exactly my point. This player would have bid 3, and if we read this thread, then they would be playing 3NT, most likely doubled. Your math is for an unlikely continuance. The NOS gained by being oblivious to the meaning of 2H because they are oblivious to what they should have done if they knew it was a transfer.


I'm not convinced they would play 3NT - the auction would likely end with 3, and the post-mortem would contain West saying "I couldn't bid 3NT, I only had a minimum, and the hand with spades was sitting over my AQx so I've only got one stop". Never mind that E is showing a decent hand, you can't double for penalties any more, and the lead's coming up to you, and that the hand showing spades is the weak one. These are not the sort of concern I see raised at this club.

My view was that 3NT was not considered automatic on the west cards, even by players here who have more understanding of the fact that the 3 bid (as opposed to a pass, or a double of 2) shows some values. That's why I didn't rule "no damage".
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#20 User is offline   aguahombre 

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Posted 2012-August-30, 10:21

3H is forcing to the posters who chose 3NT. It is forcing to most of the Bridge World. You must have some very low opinions of this E/W ---anything we post here doesn't matter to your decision if we don't have that same insight.
"Bidding Spades to show spades can work well." (Kenberg)
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