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Plan the Play 2 Rubber Bridge or IMPs

#1 User is offline   lamford 

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Posted 2024-June-19, 10:04


Playing with an occasional partner you keep the bidding simple and reach the excellent Six Spades. How are you going to play? This section is for Novices and Beginners. If you are not in that category, don't answer!
I prefer to give the lawmakers credit for stating things for a reason - barmar
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#2 User is offline   Cyberyeti 

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Posted 2024-June-19, 10:24

I've had almost exactly this hand but in 4 with the diamond suit Qxx/Jxx.
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#3 User is offline   mikeh 

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Posted 2024-June-19, 12:10

This is me not answering
'one of the great markers of the advance of human kindness is the howls you will hear from the Men of God' Johann Hari
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#4 User is offline   lamford 

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Posted 2024-June-19, 18:10

View Postmikeh, on 2024-June-19, 12:10, said:

This is me not answering

You can do the same hand at matchpoints!
I prefer to give the lawmakers credit for stating things for a reason - barmar
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#5 User is offline   lamford 

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Posted 2024-June-19, 18:11

.
I prefer to give the lawmakers credit for stating things for a reason - barmar
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#6 User is offline   shyams 

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Posted 2024-June-20, 21:14

One of the differences between good players and those that are learners is that the good players delay taking a finesse until they have more information. Occasionally this leads to them avoid the finesse altogether.

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#7 User is offline   pescetom 

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Posted 2024-June-21, 09:00

A comment on the spoiler protected solution of shyams.

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#8 User is offline   AL78 

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Posted 2024-June-21, 09:52

View Postshyams, on 2024-June-20, 21:14, said:

One of the differences between good players and those that are learners is that the good players delay taking a finesse until they have more information. Occasionally this leads to them avoid the finesse altogether.

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There is a Bridgemaster deal that is vitrually identical to this one.
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#9 User is offline   mycroft 

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Posted 2024-June-21, 11:18

This is me wondering what the opening lead is before not answering.

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#10 User is offline   pescetom 

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Posted 2024-June-21, 15:25

View Postmycroft, on 2024-June-21, 11:18, said:

This is me wondering what the opening lead is before not answering.

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It's a neat problem and I don't think that a black lead would have ruined things, at least for N/B.

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#11 User is offline   thepossum 

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Posted 2024-June-21, 17:21

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#12 User is offline   mikeh 

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Posted 2024-June-22, 16:53

View Postpescetom, on 2024-June-21, 09:00, said:

A comment on the spoiler protected solution of shyams.

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Imo, taking even one finesse, let alone two, is a serious error even at mps.

The arithmetic is quite simple. If both finesses work, you get a tied for top. That’s a 25% likelihood. If one out of two works (50%) you get tied for at worst average and usually a little over average. Let’s say 55%…which basically means about one in ten pairs miss slam. It’s very rare, in a typical mp field, for there to be no pair missing even a seemingly easy slam.

If both finesses lose, you get tied for zero. Let’s at that tied for top is 90% and tied for zero is 10%. Spurning both finesses gets you 55%. So you are trying to gain 35% by taking both finesses while risking 45% when you go down in a cold contract.

It’s extremely rare to encounter a situation in which you should knowingly risk a bad board by taking a gamb,ing line of play in a normal contract

The time to take the gambling line is when you’re in a contract that most wouldn’t be…say you’re in 3N when the field rates to be in an easy 4M. You have 9 tricks but you can see that 4M easily scores 10. Now it makes sense to risk going down in an effort to make ten tricks…if you succeed you’ve turned a 10% score into 90%, while if you fail, you’ve turned a 10% score into zero. That’s not this hand.

Of course, if you know that you need a top board (maybe it’s barometer scoring) then the foregoing analysis is irrelevant.
'one of the great markers of the advance of human kindness is the howls you will hear from the Men of God' Johann Hari
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#13 User is online   smerriman 

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Posted 2024-June-22, 17:45

Even if 100% of the field was in slam, wouldn't both finesses still be a losing option in the long run due to the possibility of dropping Qx hearts offside? (Or even the possibility that a single table gets a red suit lead..)
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#14 User is offline   Cyberyeti 

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Posted 2024-June-23, 02:15

For N/B Mike is correct. In a top class MP field, you also need to compare with 6N where they will take both finesses, and I'm not sure what effect that has (it's also possible they get a heart lead played by N which complicates things with further guesses).
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