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Quiz: Barrier-Reversing

Quiz: Deal # Tuesday
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Play basics
1002). Distribution of opponents cards in a suit - probability table 1003). Finesse 1006). With 9 cards play for the Q to drop 1007). Cutting off the supply NT ducking
Lead choice
1100). Opening lead 1101). Opening lead chart 1102). Rule of 11 NT calculation 1103). You lead a new suit 1104). Lead to a partner ruff 1105). Lead a higher card from a suit without an honour 1106). Lead through beatable strength but, up to weakness
Signals & discards
1200). Signals & discards, overview 1201). After declarer-dummy lead 1202). After partners lead 1203). Leading to a ruff 1204). Discards, save the right suit 1205). You cant follow suit, maybe signal 1206). You lead a new suit 1207). The high & low cards 1208). McKenney, revolving, Dodds, HELD, reverse HELD 1209). Signal chart for downloading
Declarer strategy
1300). Start with a quick plan - Suit contracts 1301). Start with a quick plan - No Trump contracts 1311). Dont always assume a suit will break well 1312). Draw trumps first unless you have a good reason not to
Blocking
techniques
1400). Blocking - General tips 1401). Blocking - Holding up in No Trumps
Communi-
cation
1500). Communication - General tips 1501). Communication - Overtaking 1502). Communication - Ducking
Trump
use
1600). General trump tips 1603). When to pull trumps 1604). Retain trump control 1607). Avoiding trump promotions
Count
&_squeeze
1700). Counting and squeeze - general tips 1701). Counting the suits 1702). Squeeze
End-play
throw-in
1800). Endplay - - general tips 1801). Endplay - when to give away the lead
Confuse
&_mislead
1900). Confuse & mislead - general tips 1901). Lead up to your two-honour holding 1904). Consider leaving a lone defensive trump winner out

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Quick summary

Remove enemy's leads in the danger suit.

Hold back your winner in the enemy's strong suit, until they can no longer lead it to eachother.

How many times should you duck ?

"Rule of 7" only works on a lead from a 5-card lead suit

subtract from 7 the number of cards you have, inc. dummy
duck it that number of times, then use your winner

So think about the likely split !

Print cribsheet

Bridge Venue

« 1007 »

Cutting off the supply - ducking in No Trumps

The "rule of 7" only works if the lead is from a 5-card suit

In NT, if your enemy manages to establish a long suit, they could defeat your contract. If you play your only winner in that suit too early, then you might not be able to stop them.

When should you play your winner ?

Your goal is to stop your right hand opponent (RHO) leading back the suit to your LHO, who can then play out all his winners. So, you should play your winner in the same trick that your RHO uses his last card in this suit. If your RHO subsequently gets the lead, his communications will have been blocked off and you will be safe from this danger.

Mathematically, if your LHO has a 5-card suit, you can easily calculate how many time you neeed to duck: Count the number of cards you and dummy have in the suit, and subtract this from 7. The resulting is the number of times you must duck. This works equally well if the LHO leads to the RHO's long 5-card suit.

West leads K. When should you play the Ace?

-	West
	K Q J 9 2

-	North
	8 4

-	East
	10 7 3

-	South
	A 6 5


+	<---- Click the "+" for the Answer
	You have 5 Spades. 7-5=2. So you should hold up twice before playing the Ace.

From a 4-card suit lead, your RHO will have one more card, and so you would have to hold up once more.

So, adjust the rule depending on the split you think you have against you.

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