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Assess your matchpoint score

#1 User is offline   Cyberyeti 

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Posted 2013-August-06, 05:31

This hand genuinely surprised me with the matchpoint scores.



I think opps had issues about what the second double was and we quickly wrapped up -300.

What % of the matchpoints do you think this was worth, regional swiss pairs, standard fairly mixed.
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#2 User is offline   nige1 

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Posted 2013-August-06, 05:58

View PostCyberyeti, on 2013-August-06, 05:31, said:


This hand genuinely surprised me with the matchpoint scores.
I think opps had issues about what the second double was and we quickly wrapped up -300.
What % of the matchpoints do you think this was worth, regional swiss pairs, standard fairly mixed.
About 70% assuming that of NS pairs:
  • 15% Reach a partscore.
  • 10% Fail to double a sacrifice.
  • 5% Go down in a slam.

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#3 User is offline   Fluffy 

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Posted 2013-August-06, 06:14

There is no slam going down, the only pairs that could beat you are 1-1 all pass or some bad auction where south only counts points and ends up with +230.

80% on a good field, 60% on a very bad one.
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#4 User is offline   billw55 

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Posted 2013-August-06, 06:40

I would think -300 would score very well, maybe 80-90%, and a cold top would not surprise me. NS have misbid badly. Par should be -650 or so for 4M N-S. 5x will be -800. A few NS might bid a slam, but they also might make it.

I could be overestimating the field though.

edit: in fact, now that I think about it, a matchpoint fix is probably the reason this hand made the forum.
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#5 User is offline   Cyberyeti 

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Posted 2013-August-06, 08:02

View Postnige1, on 2013-August-06, 05:58, said:

Go down in a slam


Nobody managed that although 1 NS got a complete bottom for 2N-1 !

Standard was very mixed, quite a few welsh internationals to people playing their first serious event.
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#6 User is offline   WellSpyder 

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Posted 2013-August-06, 08:22

View PostCyberyeti, on 2013-August-06, 08:02, said:

Nobody managed that although 1 NS got a complete bottom for 2N-1 !

Standard was very mixed, quite a few welsh internationals to people playing their first serious event.

Nobody managed to go off in 4, then? In a mixed field I would have thought that was quite possible, eg lead ruffed, to A and a losing finesse, followed by another , ruffed. Now the last trump drawn, AK cashed, and so long as West doesn't ruff J declarer will go off.
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#7 User is offline   Cyberyeti 

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Posted 2013-August-06, 08:43

View PostWellSpyder, on 2013-August-06, 08:22, said:

Nobody managed to go off in 4, then? In a mixed field I would have thought that was quite possible, eg lead ruffed, to A and a losing finesse, followed by another , ruffed. Now the last trump drawn, AK cashed, and so long as West doesn't ruff J declarer will go off.

No, 2N-1 was the only minus, I suspect the field was up to either playing AKJ before drawing the last trump or playing AKx either of which will make 4. I have the frequencies and will publish them later.
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#8 User is offline   billw55 

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Posted 2013-August-06, 08:54

View PostCyberyeti, on 2013-August-06, 08:02, said:

Standard was very mixed, quite a few welsh internationals to people playing their first serious event.

In such a field, trying to estimate results is a fruitless endeavor. Much easier to just wait for the scores.
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#9 User is offline   Free 

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Posted 2013-August-06, 09:15

I would think it's a very poor score. Opps have enough s to sacrifice much higher than 3-level. After a 1 opening many roads lead to us making game or them defending higher.
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#10 User is offline   Cyberyeti 

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Posted 2013-August-06, 09:20

View PostFree, on 2013-August-06, 09:15, said:

I would think it's a very poor score. Opps have enough s to sacrifice much higher than 3-level. After a 1 opening many roads lead to us making game or them defending higher.

We were EW in the land of the weak no trump, so 1N-X was going to be a pretty common start.
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#11 User is offline   billw55 

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Posted 2013-August-06, 09:27

View PostFree, on 2013-August-06, 09:15, said:

I would think it's a very poor score. Opps have enough s to sacrifice much higher than 3-level. After a 1 opening many roads lead to us making game or them defending higher.

I don't understand. The side with the diamonds got -300 at the table.
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#12 User is offline   Fluffy 

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Posted 2013-August-06, 09:38

View PostCyberyeti, on 2013-August-06, 09:20, said:

We were EW in the land of the weak no trump, so 1N-X was going to be a pretty common start.


I overlooked the land of weak NT, this makes things a lot harder for NS, and 50% for -300 can be fine.
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#13 User is offline   billw55 

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Posted 2013-August-06, 09:51

View PostFluffy, on 2013-August-06, 09:38, said:

I overlooked the land of weak NT, this makes things a lot harder for NS, and 50% for -300 can be fine.

I suppose. But, if it is the land of weak NT, shouldn't it also be the land of defenses to weak NT?
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#14 User is offline   CamHenry 

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Posted 2013-August-06, 10:47

View Postbillw55, on 2013-August-06, 09:51, said:

I suppose. But, if it is the land of weak NT, shouldn't it also be the land of defenses to weak NT?


The most common defense to weak 1NT (that applies here) is double for penalties. I think most E players will try escaping to ; how they do that and what S does will vary. There will be a fair few 2 transfer starts; some XX showing a single suiter and being left in by a misunderstanding, and other gratuitous disasters. Overall I think a lot of NS pairs may run into trouble: after the start
1N-X-2-?
not all will have discussed whether doubles are for takeout here (I think they should be, as then S can show values with no clear direction), and some S hands might bid 2 - at which stage N says "I've got almost a minimum double with 3-card support, so I'll pass".

You're then booked for a bad score conceding 300 in 3X as E/W.

Of course, I think S should do something stronger than 2 - 3 would be my choice over 2 - and then you probably find some game or another. Forgive me if I'm wrong, but doesn't 6 have play even on a lead?

(edit: 7 makes double-dummy unless my analysis is incorrect, but it needs the break and the trump guess)
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#15 User is offline   Cyberyeti 

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Posted 2013-August-06, 11:04

View PostCamHenry, on 2013-August-06, 10:47, said:

The most common defense to weak 1NT (that applies here) is double for penalties. I think most E players will try escaping to ; how they do that and what S does will vary. There will be a fair few 2 transfer starts; some XX showing a single suiter and being left in by a misunderstanding, and other gratuitous disasters. Overall I think a lot of NS pairs may run into trouble: after the start
1N-X-2-?
not all will have discussed whether doubles are for takeout here (I think they should be, as then S can show values with no clear direction), and some S hands might bid 2 - at which stage N says "I've got almost a minimum double with 3-card support, so I'll pass".

You're then booked for a bad score conceding 300 in 3X as E/W.

Of course, I think S should do something stronger than 2 - 3 would be my choice over 2 - and then you probably find some game or another. Forgive me if I'm wrong, but doesn't 6 have play even on a lead?

(edit: 7 makes double-dummy unless my analysis is incorrect, but it needs the break and the trump guess)


I think many people play 1N-X-2-X as pens.

6 would earn you all the matchpoints.

Frequencies as follows.

-100: 1 (2N-1)
100: 1 (3-2)
150: 1 (4-3)
200: 3 (spade partial)
230: 2
260: 3
300: 1
650: 1
680: 2
710: 10
800: 5

So we got 62% for -300.
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#16 User is offline   WellSpyder 

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Posted 2013-August-06, 11:10

View PostCyberyeti, on 2013-August-06, 11:04, said:

we got 62% for -300.

What did you expect?
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#17 User is offline   Cyberyeti 

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Posted 2013-August-06, 12:46

View PostWellSpyder, on 2013-August-06, 11:10, said:

What did you expect?


A bit better than that (when we played the board which was in the final match as our last board, we were getting less than 60 according to the bridgemates, I was slightly surprised when I looked the board up today and found it had climbed to 62), I was surprised how many people played partscores or didn't double 3/4.
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#18 User is offline   JLOGIC 

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Posted 2013-August-06, 14:15

We are obv biased by you posting the hand in this manner, it was clear you got much lower than expected, I cannot expect estimating anything other than top on this board which means 90-100 %. I do not live in a country where wk NT is standard though, I guess thats what made people stop in partscore.
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