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Play problem from IMP pairs On the easy side

#1 User is online   awm 

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Posted 2009-March-23, 20:50

Scoring: IMP


1♦(1) - 2♦(2) - 2♠(3) - PA
4♠ - PA - 4NT - PA
5♥(4) - PA - 7♠(5) - All Pass

(1) Precision-style; could be short
(2) Natural, five or more diamonds
(3) Natural, forcing
(4) Two without the queen
(5) A bit of an overbid, but north could easily have four ♠ on this sequence

West leads the ♦8, taken in hand with ♦Q. The spades need to behave for the contract to have any hope, so I banged down the ♠A. Both opponents followed, East playing the queen.

Can you find the 100% line?

I misplayed this at the table, but the cards were fairly friendly and my line succeeded anyway. (BTW: I think this is easier than most problems appearing in this forum, but it seems on the tough side for a B/I problem).
Adam W. Meyerson
a.k.a. Appeal Without Merit
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#2 User is offline   gnasher 

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Posted 2009-March-24, 04:10

Don't I have six trumps, two hearts, two diamonds, a diamond ruff, and two clubs?

To make it more interesting, suppose that trumps are 3-1, East having singleton queen. I draw trumps and play three rounds of clubs, ruffing. If West has four clubs, I play a double squeeze with hearts as the pivot; if East has four clubs, I play a diamond-club squeeze, using the second heart as the squeeze card. Playing on clubs after only two rounds of trumps loses when RHO is 1255.

Edit: Corrected the typo, and please ignore the first two sentences, which I would remove if Frances hadn't already quoted one of them. When I read the problem, I thought trumps were 2-2.

This post has been edited by gnasher: 2009-March-24, 06:56

... 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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#3 User is offline   FrancesHinden 

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Posted 2009-March-24, 05:41

gnasher, on Mar 24 2009, 10:10 AM, said:

Don't I have six trumps, two hearts, two diamonds, a diamond ruff, and two clubs?

Only if you didn't listen to the auction.

But I agree with your revised line (after correcting typo) anyway.
Draw trumps in 3 rounds. Ruff a club in hand.
- If clubs are 3-3 claim
- If RHO has 4+ clubs run trumps and squeeze him in the minors
- If LHO has 4+ clubs run trumps for a double squeeze

The difference between the last two lines is your discard on the last trump in this position:

-
AK6
4
J


3
10
A7x
-

If RHO started with the clubs you discard a heart without thinking
If LHO started with the club you discard the club if it isn't good.

Quote

(BTW: I think this is easier than most problems appearing in this forum, but it seems on the tough side for a B/I problem).


It feels easy because it's a textbook hand. But if you haven't yet read the textbook, it's not.
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#4 User is offline   gnasher 

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Posted 2009-March-24, 06:53

FrancesHinden, on Mar 24 2009, 12:41 PM, said:

gnasher, on Mar 24 2009, 10:10 AM, said:

Don't I have six trumps, two hearts, two diamonds, a diamond ruff, and two clubs?

Only if you didn't listen to the auction.

I think you'll find that I didn't listen to the play.
... 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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#5 User is offline   Vilgan 

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Posted 2009-March-24, 07:21

I only made 6 on this hand at the table :) No helpful diamond overcall though clarifying the risk of a diamond rough.
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