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Quiz: Barrier-Reversing

Quiz: Deal # Sunday
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Basic
strategy
0000). How to use 0001). Bidding Objectives = "8 and 25" 0002). 28 for minor 0003). 33 for NT slam 0004). Suit slam 0005). Importance of length 0006). Convention card 0007). ACOL and American Standard, differences 0008). A-Z Glossary 0690). A-Z Glossary
Hand
evaluation
0010). Balanced-Unbalanced 0011). How strong is your hand, HCP 0012). Distribution points 0013). Losing trick count 0014). Barrier-Reversing 0015). Selection of opening suit 0016). Showing shape 0017). 4441 distribution 0018). The skip over principle 0019). Rule of 20 Opening 1 of a suit 0019a). Rule of 25 Opening 2 of a suit 0019b). Rule of 500 Max penalty risk on preempt if doubled 0019c). Law of total tricks 0019d). Rule of Protective bidding
Opening
bids
0020). Plan of attack 0021). Bal, 12 to 19 HCPs, weak NT 0022). Bal, 20+ points 0023). Bal, 15 to 17 HCPs, strong NT 0025). Unbal, 12 to 19 HCPs, 1 suit 0026). Unbal, Strong 2s 0027). Unbal, Pre-emptive 0028). Unbal, Gambling 3NT 0029). Benji Strong 2s
Responder
1st bids
0030). After 1NT, General principles 0031). After 1NT, Weak 0032). After 1NT, Getting out of trouble 0033). After 1NT, 11+ balanced 0034). After 1NT, 11+ 4-card major 0035). After 1NT, 11+ unbalanced 0036). After 1NT, 19+ 0037). After 2NT 0038). After 1NT, and Enemy has interfered 0039). 1 NT responses 0040). After 1 Suit, With fit 0041). After 1 Suit, No fit, but alternative suit 0042). After 1 Suit, No fit, no new suit, probably balanced 0043). After 1 Suit, 6 points, nothing to bid 0044). After 1 Suit, Very strong 0045). After 1 Suit, Weak freak 0047). After 2 Suit, Strong 2s 0048). After 2 Suit, Weak 2s 0049). After 3 Suit, Responding to preempt
Openers
rebid
0050). Unbalanced, The general idea 0051). Unbalanced, You are weak 0052). Unbalanced, You are strong 0053). Unbalanced, Partner replied with 1NT 0054). Unbalanced, Delayed support 0055). Balanced
Responder
rebids
0060). Responder rebids, The general idea 0061). Choice of two suits 0062). Responders reverse 0063). After 1NT rebid
Basic
Convention
0080). Stayman 0081). Transfer 0082). Transfer after 2NT 0161). Minor suit transfer
Slam
bidding
0090). Slam, Spotting the chance 0091). Blackwood 0092). No-trump slam 0093). Gerber 0094). Extra slam techniques
Interfering
bids
0100). Overcalls, the basic idea 0101). Overcalls, in a suit, over a suit 0102). Overcalls, in a suit, over 1NT 0103). Overcalls, in NT, over a suit 0104). Overcalls, Jump overcall 0105). Overcalls, Double then bid a suit 0106). Overcalls, Bidding opponents suit 0107). Overcalls, Balancing (protective) 0108). Overcalls, Overcall a preempt 0109). Overcalls, Preemptive double jump 0110). Overcalls, To overcall, or to double 0111). Overcalls, Response to 1NT after suit overcall (Lebensohl) 0115). Defence after 1NT 0116). Competitive bidding 0117). Be cautious sometimes 0118). Sacrificing Be bold when non-vulnerable 0119). Sacrificing 0120). Doubles, Double a 1NT 0121). Doubles, Double for takeout 0122). Doubles, Doubling after opponent overcall 0126). Doubles, Protective double
Doubles

0120). Doubles, Double a 1NT 0121). Doubles, Double for takeout 0122). Doubles, Doubling after opponent overcall 0123). Doubles, Negative double 0124). Doubles, Double a 1NT overcall 0125). Doubles, Double a suit over 1NT 0126). Doubles, Protective double 0127). Doubles, Responsive double 0128). Doubles, Double then bid a suit 0129). Doubles, Penalty 0130). Doubles, Support double 0131). Doubles, Lead directing double 0132). Doubles, Maximal double 0133). Doubles, Redoubling - coded meanings 0134). Doubles, Forcing Pass 0135). Doubles, Re-opening double 0139). Doubles, Index of doubles
Advanced
Convention
0150). Majors Jacoby 2NT 0151). Majors Splinters 0152). Majors Weak 2s 0153). Majors Weak 2 defence 0154). Trial bid 0160). NT and minors 4th suit forcing 0161). Minor suit transfer 0162). DONT Bidding When Opponents open 1NT 0163). Game tries 0166). Grand Slam Force 0167). Roman Keycard Blackwood 0168). Cue bidding for controls 0170). 2-suited Overcall Unusual 2NT 0171). 2-suited Overcall Michaels cue bid 0172). 2-suited Overcall Landy over 1NT 0173). Overcall Unassuming cue bid 0179). Very advanced

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Quick summary

Tell your partner what to lead

Double the enemy's control finding cue bid or Blackwood response. Partner will lead it to you if he was awake.

Print cribsheet

Bridge Venue

« 0131 »

Lead directing double

Hey partner, lead this suit when you can !

When can you use Lead Directing Doubles ?

after a control seeking cue bid
after a coded 2 opening
after Stayman 2

A double during the enemy's 'cue bidding for controls' sequence can be very useful. It tells your partner to lead this suit when he opens the play.

It can often result in getting the opponents down if you have a long strong suit, even if the enemy does have the controlling Ace. After all, they might also have a couple of other losers in this suit.

The deal below illustrates the power of this bid rather well, as there are two opportunities to make lead directing doubles.

	Deal 1		10 9 8 6		Deal: South Vuln: none		South has 9 playing tricks and can open 2. West can now double to show his partner what to lead. However, the contract ends up in Souths's 6. Does East have a chance to tell West about the much better and contract defeating lead of Diamonds ? Well yes. Can you see how ?
			Q 10 8 6 3
			A 4 2
			2
	A 4	N			3
	9 7 2	W E			J 5 4
	9 7	W E			K Q J 10 8
	Q J 10 8 5 3	S			9 7 6 4
			K Q J 7 5 4
			A K
			6 5 2
			A K

After South's opening 2 bid, the sequence goes like this:

2 - X - p - p (note 1)
2 - p - 3 - p (note 2)
4 - p - 4 - X (note 3)
4NT - p - 5 - p (note 4)
6 - all pass

North passes after the double to indicate game interest after the double. A redouble shows 10 points with no help.
North's hand is now much more valuable after South's 3. Game interest becomes Slam interest, so he bids slowly. A 4 bid would show no interest in Slam.
The and bids are both cue bids, showing first round control. The double is the key to this defence. It tells West, who will be on lead in this Spade contract, to lead diamonds.
South should have been worried by the double, "trouble in Diamonds from West". With his 3 losers in diamonds, instead of Blackwood 4NT, he might have considered another cue bid in Clubs to check on second round controls. The answer would not have been good, and he might have bailed out at 5 Spades. As it is, the 6 contract can be defeated, but only with a diamond lead.

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