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Optimistic Seven hearts


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[hv=pc=n&w=saq2ha5dakj973caj&e=s974hkqj876d2cq92]266|100[/hv]

 

What is the best line in a contract of 7 by East on the 8 lead (no opposition bidding).

 

Match-point Pairs, Non-vul. Vs. Vul.

 

Bonus question: how would you bid this after East opens a Multi?

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Win, draw trumps, 2 top s and ruff one. If s break or there is a doubleton Q then we have 4 discards.

Otherwise finesse J before ruffing out Q.

 

2-2N

3(any max wk 2)-3(which?)

4(s short )-4NT

5(1/4)-5

6(Q no K/void)-7

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Thank you.

 

Yes, that's where I was coming out - you can't cope with a 4-2 diamond break without relying on the club finesse (which works on this occasion). My back of an envelope maths makes this about a 60% line - not quite good enough odds for bidding the big one at pairs.

 

Our auction was similar (different responses to the 2NT enquiry, but same in all of the essentials). I probably should have stopped at 6.

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I did:

 

3-3 break = 36%

4-2 break = 48% => so 4-2 and club finesse = 24%

 

Total 60%

 

But I may be wrong - its many years since I studied probability theory!

 

There's also the 1 case of stiff Q offside, where you can finesse the ten (1/12 of .15 = 1.25%) and the 4-2 breaks where the Q falls doubleton, (10 of the 30 4-2 combo's or 1/3 of 48%, which is 16% plus half the other ones (48-16=32 halved is 16%) which gets me to 36 + 1.25 + 16 + 20 = 73.25%

 

There's about a 0.5% of the K being stiff, which takes us to 73.75% which is almost 74%

 

Edit: I edited this as I originally only had 5 of the 30 4-2 combo's but given either hand can have Qx it should be 10 of the 30 combo's.

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Just picking a 1.25% nit. Which diamond are you going to lead to finesse when the Q drops stiff?

 

Lol, I'll try the 2 again :-)

 

Sorry I was so busy working on the maths that I totally overlooked that tiny little flaw. A cunning plan Baldric.......

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