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Year End Congress 2 EBU Swiss Pairs

#1 User is offline   mjj29 

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Posted 2010-December-28, 16:35

Not my ruling this time, but interesting.
Result: 11 tricks, Spade lead


The 3S was initially not alerted. At East's turn to call he asked about 3S, was told it was "Natural and preemptive" (which, the eagle-eyed among you will note, is alertable in the EBU. It was meant as a splinter) and then passed. The auction continued to 5H doubled, which on the lead of a spade (to the hand that asked about 3S) rather than the normal club made 11 tricks. East/West then called the director to point out the possible unauthorised information from the explanation.

I'll post the ruling that was eventually reached later.
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#2 User is offline   pran 

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Posted 2010-December-28, 16:40

View Postmjj29, on 2010-December-28, 16:35, said:

Not my ruling this time, but interesting.
Result: 11 tricks, Spade lead


The 3S was initially not alerted. At East's turn to call he asked about 3S, was told it was "Natural and preemptive" (which, the eagle-eyed among you will note, is alertable in the EBU. It was meant as a splinter) and then passed. The auction continued to 5H doubled, which on the lead of a spade (to the hand that asked about 3S) rather than the normal club made 11 tricks. East/West then called the director to point out the possible unauthorised information from the explanation.

I'll post the ruling that was eventually reached later.

I assume the actual agreements were established? Why not let us know?
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#3 User is offline   mjj29 

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Posted 2010-December-28, 18:10

View Postpran, on 2010-December-28, 16:40, said:

I assume the actual agreements were established? Why not let us know?

The TD ruled on the basis of UI alone and not MI, so lets assume misbid and not misexplanation (It wasn't my ruling)

Matt
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#4 User is offline   campboy 

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Posted 2010-December-28, 19:58

4NT is a logical alternative to 5, and 5 is suggested. It is not clear what will happen after 4NT, though, as it doesn't make much sense. I would need to ask N/S various silly details about their methods here, but I imagine that 6x is a likely spot without the infraction. If they play 3014 RKCB, say, and South decided to respond normally assuming North misbid with a strong spade hand, then it would continue 5 (1 or 4, for spades), 5 (I know you don't have 4 as you didn't cue clubs, let's try to play here), 6 (I have the Q and the K). Let's not forget to tell West off for his lead.
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#5 User is offline   blackshoe 

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Posted 2010-December-28, 20:34

If it doesn't make sense, how is it a logical alternative?
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#6 User is offline   l milne 

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Posted 2010-December-28, 23:11

Well, at least West seems to have got what he deserved with that lead.
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#7 User is offline   Trinidad 

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Posted 2010-December-29, 03:17

View Postblackshoe, on 2010-December-28, 20:34, said:

If it doesn't make sense, how is it a logical alternative?

It is a logical alternative for North. The bid won't make any sense to South since a preempter will not start asking for aces (or compete in NT).

Rik
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#8 User is offline   pran 

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Posted 2010-December-29, 03:22

View Postmjj29, on 2010-December-28, 18:10, said:

The TD ruled on the basis of UI alone and not MI, so lets assume misbid and not misexplanation (It wasn't my ruling)

Matt

Then we must know how North should understand the 4 bid if South had alerted and explained the 3 bid as a Splinter variant (the way North apparently intended his bid). I would not know how to understand the 4 bid (unless my partner was a Dane familiar with Trelde asking bids)
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#9 User is offline   Cyberyeti 

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Posted 2010-December-29, 05:47

View Postpran, on 2010-December-29, 03:22, said:

Then we must know how North should understand the 4 bid if South had alerted and explained the 3 bid as a Splinter variant (the way North apparently intended his bid). I would not know how to understand the 4 bid (unless my partner was a Dane familiar with Trelde asking bids)

Exactly, is 4 kickback without the UI ? First round cue in spades with no first round minor suit controls and slam interest ?

Axx, AKQJxx, Kx, xx would seem a perfectly plausible hand for the second case, in which case N with his K over the bidder and excellent diamonds should be bidding 6. If 4 should be kickback, clearly N should be giving his 1 ace response and S will sign off in 5 forcing N to bid 6.

EW got exactly what they deserved for the spade lead, but should the result stand for them ? I'd be inclined to give both sides 6x-1 with a PP to EW for the lead.
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#10 User is offline   alphatango 

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Posted 2010-December-29, 09:12

View PostCyberyeti, on 2010-December-29, 05:47, said:

If 4 should be kickback, clearly N should be giving his 1 ace response and S will sign off in 5 forcing N to bid 6.


Will S sign off in 5? Or will they figure out what's happened after the theoretically weak hand bids again over 4?
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#11 User is offline   bluejak 

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Posted 2010-December-29, 10:47

East has asked about 3 when it was not alerted, which provides UI to West. West has ignored a suit headed by QJT to lead a suit of Jxx which is the clearest use of UI I have come across in a long time.

Of course, we are not going to adjust on the basis of a club lead for N/S since the club lead is better for E/W so no damage. But the lead by West is such a dreadful one that i think we must consider a PP for West to teach him a lesson [or an explanation of UI principles if we consider West inexperienced].
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#12 User is offline   jallerton 

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Posted 2010-December-29, 11:09

View Postbluejak, on 2010-December-29, 10:47, said:

East has asked about 3 when it was not alerted, which provides UI to West. West has ignored a suit headed by QJT to lead a suit of Jxx which is the clearest use of UI I have come across in a long time.

Of course, we are not going to adjust on the basis of a club lead for N/S since the club lead is better for E/W so no damage. But the lead by West is such a dreadful one that i think we must consider a PP for West to teach him a lesson [or an explanation of UI principles if we consider West inexperienced].


Is West's lead a clearer use of UI than North's 5 bid?
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#13 User is offline   StevenG 

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Posted 2010-December-29, 12:11

View Postbluejak, on 2010-December-29, 10:47, said:

East has asked about 3 when it was not alerted, which provides UI to West. West has ignored a suit headed by QJT to lead a suit of Jxx which is the clearest use of UI I have come across in a long time.


I really cannot see how the UI demonstrably suggests a lead. On the bidding, East must be short in the suit.
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#14 User is offline   mycroft 

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Posted 2010-December-29, 12:42

Two cases that I see:

- North realizes he made a mistake, and that South is right. But he still has to bid as 4S was responding to the splinter. 5H is clearly unauthorized panic, but what else can he do? Lots, as we see above, depending on what 4S would have been after 1H-3S(clearly a splinter)-4S. Respond to kickback, cue 5D (showing a (expected) working club card that isn't the Ace as well) to a 4S cue (first round first), 4NT (ick, but 4S *should* show the DK or a stiff) to the same 4S cue,...

However, if they play full on "first and second" cues, 5H is automatic. "don't have first or second round control in both minors? we're done."

- North was right, and South misinterpreted. Now we have to believe that North corrected before the opening lead, which makes West's spade lead stranger - but I do know that people lead the splinter suit for some strange reason. If North didn't correct, that's yet another problem.

So I can't say what would happen without N/S agreements. And this hand is a reminder to think about the followups and get that information at the table before going away to consult...
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#15 User is offline   mjj29 

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Posted 2010-December-29, 17:06

View Postmycroft, on 2010-December-29, 12:42, said:

So I can't say what would happen without N/S agreements. And this hand is a reminder to think about the followups and get that information at the table before going away to consult...


I don't have the full details of their agreements, suffice it to say that the TD determined that they should have reached 6H via some route or other (I didn't ask), so adjusted the NS score to 6HX-1 (50%) and 6HX-2 (50%). What took longer was working out what should happen if the use of UI by defence is considered a serious error unrelated to the infraction.
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#16 User is offline   RMB1 

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Posted 2010-December-29, 18:10

View Postmjj29, on 2010-December-29, 17:06, said:

What took longer was working out what should happen if the use of UI by defence is considered a serious error unrelated to the infraction.

See Use of unauthorised information is a serious error.
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#17 User is offline   blackshoe 

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Posted 2010-December-29, 22:31

I don't think it's possible to consider "use of UI" as "unrelated to the infraction". Seems to me it is the infraction.
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Our ultimate goal on defense is to know by trick two or three everyone's hand at the table. -- Mike777
I have come to realise it is futile to expect or hope a regular club game will be run in accordance with the laws. -- Jillybean
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#18 User is offline   RMB1 

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Posted 2010-December-30, 01:52

View Postblackshoe, on 2010-December-29, 22:31, said:

I don't think it's possible to consider "use of UI" as "unrelated to the infraction". Seems to me it is the infraction.

Some are prepared to apply Law 12C1b when there has been a revoke by defenders following use of UI by the declaring side. (Revoking is listed as an example of a Serious Error in EBU Laws and Ethics Committee minutes 20 September 2009.) The revoke is an infraction but we treat it as a serious error unrelated to the infraction by the opponents, the use of UI.
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#19 User is offline   mfa1010 

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Posted 2010-December-30, 04:52

I agree that making an illegal lead (due to UI) is a serious error.

View Postblackshoe, on 2010-December-29, 22:31, said:

I don't think it's possible to consider "use of UI" as "unrelated to the infraction". Seems to me it is the infraction.

There are two separate infractions in play here.
Michael Askgaard
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#20 User is offline   bluejak 

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Posted 2010-December-30, 08:14

View Postjallerton, on 2010-December-29, 11:09, said:

Is West's lead a clearer use of UI than North's 5 bid?

Quite possibly not, but two wrongs never made a right.

:ph34r:

View PostStevenG, on 2010-December-29, 12:11, said:

I really cannot see how the UI demonstrably suggests a lead. On the bidding, East must be short in the suit.

Not a chance! When 3 is not alerted, but East asks about it anyway, I would put a lot of money on East having a reasonable spade holding.
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