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A Defensive Problem

#21 User is offline   Antrax 

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Posted 2014-July-18, 23:32

I really really don't follow, maybe seeing all hands biases me. You want to duck a diamond as a safety play, since you really only need three diamond tricks.
If N has another heart to lead, S has a four-card suit and declarer loses three hearts and one diamond and makes.
If N has no hearts to lead, then S has no entry, since declarer is looking at stoppers in both black suits, so declarer makes 4 diamonds even on a 4-0 break.
So, why is ducking a diamond to north anything but a good play? It loses an overtrick when north has Qx, but isn't that normal at IMPs to prevent going off on the actual deal?
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#22 User is offline   wanoff 

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Posted 2014-July-19, 02:48

View Postlamford, on 2014-July-18, 15:05, said:

It assumes North cannot find the queen from Qx or the duck from QJx.


No need to assume anything.
It's irrelevant what the defence does with QJx, you duck the Q (in case it's stiff) and win everything else.
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