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03-20-2006 12:06:29

Chapter 6

Defense Against Preempts

Most preempts have less than a quarter of the high card points.  If follows that the defending side will be stronger over half the time, and the plus should belong to the defenders over half the time.  Also, because the preempt both weaker and more distributional than a one-bid, we should have more games and slams than when defending against a one-bid.

A table is created from a double-dummy analysis of 1008 deals for each of the following first-seat openings:

  1. 4 , 4 preempts.  Opener has eight or more trumps and 0 to 10 HCP.  Four-preempts are often better than this.
  2. 3 , 3 preempts.  Opener has seven trumps and 0-10 HCP.  Some make three bids with only six trumps.
  3. Two-major preempts.  Six trumps, a piece in trumps, and 6-10 HCP.
  4. Bailey two-bids.

East-West pluses
Slam Game PartScore Total Pluses
4 , 4 220 247 45 512
3 , 3 180 288 108 576
2 , 2 132 257 152 541
Bailey 78 254 220 552

An East-West plus means the highest making contract belongs to East-West.  Obviously partscore against a 4-major preempt means they have overbid, and if your game is exactly 3NT or 4 your plus must come through defense.

Other observations:  (1) The plus belongs to the defenders over half the time.  (2) The more distributional the preempt, the more likely you are to have game and slam rather than partscore.

Game and slam bidding is important against preempts.  Defensive bidding theory often relates to partscore decisions.

Defense Against Preempts

We have been defending against preempts for years, and I never have had a set of notes on the subject.  If your judgement disagrees with the rules, stick to your judgement, and provide feedback.  The preempt can be anything from 2 to 4 (or 4 ), and I am trying to cover all cases.

The preempter's partner has the best idea of what we should do.  Does he give clues?  Lack of interest suggests we have game or slam.  Raising the preempt can indicate either high cards or a fit.  Passing indicates no cards or a misfit.  Be aware of the phony 3NT, especially over a minor suit preempt.  We are allowed to read his behavior.  If partner is the preempter, then we must avoid giving clues.  Coffeehousing is not allowed.

You hold

  x x
  K Q J x x x
  x x
  A Q x

and they open anything from 2 to 4 .  I would make a minimum bid in hearts at all vulnerabilities.  If I bid 4 it could be a disaster, but if partner has the expected 10 points I should be okay.

Try again

  x x
  K Q J x x x
  x x
  A x x

RHO bids anything from 2 to 3 .  If you pass, they steal.  If you bid, partner will get you too high.  I would bid 2 over 2 .  I think it is right to bid 3 over 2 through 3 .  Partner should play me for a better hand than I have.  If the ten points were scattered I would pass all preempts.  Requirements for fourth seat are not much lower.  If I am fourth seat, I do bid with this hand.

Advancer's Expectations and Actions

Play a suit overcall to start a hair better than an opening bid.  Though, it may be a five-card suit, expect six cards.  Suit length can make up for lack of points.  Jumps are strong.  With 5-3 in the majors, we bid the 5-bagger.  With 6-4, we double.

Play a two-level overcall to start at 15 suit points.  Bidding game starts at 10 suit points.  DIFFERENT:  For two-level overcalls there is a courtesy raise and an invitational raise.  The courtesy raise is three trumps and a hand worth 6-7 suit points.  A serious raise is a cue -bid and a hand worth 8-9 suit points.  DIFFERENT:  New suit by unpassed advancer is forcing one round.  The advancer hand that wants to play 3NT rather than 4-major if overcaller has a stopper is rare.

If the preempt is raised to the 3-level, then double is responsive.  It does not matter whether partner bid a suit or doubled.  If it is raised to the 4-level, then double is cards and penalty.

The raise of a three-level overcall probably starts at about 8 suit points.  Here, cue is a choice of games with priority given to notrump.  The cue-er can be interested in the other major.

Cue Examples

2 3 Pass 3
Pass ?

Bid 3NT with a stopper else 4 .

2 2 Pass 3
Pass ?

Bid 3 with a minimum, else something else.

2 3 Pass 3
Pass ? 

Bid 3NT with a stopper, else 3 with three spades, else 4 .  The cue-er, with spades, could bid 3 with the close to the same effect.

The Takeout Double

Doubles start at an opening bid, and should have at least three-card support for each unbid major.  With only three you should have extras.  Versus 2 , 3-minor, and 4-minor, you do not need support for the other minor.  You can double a major with the other major, and shortage in a minor.  The upper limit of a two-level advance is about 8 or 9 suit points.  The 2NT response should sort the minors.  If 2NT is available as a response (to a double), then 3 and 3-major (jump or not) are invitational.  Both 3-major, and 2NT followed 3-major invite; 2NT and then 3-major shows four.  Cue over a double is choice of games, and priority is notrump.

We accept Robinson's double of 4 :  It is a strong notrump (or better) and takeout; it will usually be left in.  Takeout means that you cannot double on a trump stack.

Responding to a Takeout Double  of a Weak-Two
2 — Double — Pass 3 Large range.  0-10 HCP
3 Some values.  7-10 HCP
3 Some values.  7-10 suit points.
2NT, then 3 , 3 0-6 HCP.
3 Game force.  Do not bid 3-card major in response.
2NT, then 3 .  Game force with stopper.  Do not bid 3-card major in response to cue.  Do not sweat the distinction between these two auctions.
2NT, then 4 , 4 Game force.
4 , 4 Invitational.
2 — Double — Pass 2 0-8, 9 suit points.
3 8, 9-11 suit points.  Invitational.
2NT, then 3 Same as jump to 3 .  Stopper.
2 — Double — Pass 2 , 2 0-8, 9 suit points.
3 0-10 HCP.
2NT Values (8-10, 11) HCP.
3 Pick a major.  Not forcing
3 , 3 , 4 Invitational.

Notrump Overcals

A minimum notrump overcall, 2NT or 3NT, shows a hand in the 15-18 HCP range.  Responses, except for the cue, are natural and not forcing.  4NT, usually over 4-major, is a good two- or three-suiter.

Good Hands Over a Weak Two

Possibilities are:

  1. Jump one level (not forcing), or to game.
  2. Cue.  We can either follow Robinson's ideas and use cue to ask specifically for notrump, and leaping Michael's on some 5-5 hands, or use the cue for whatever suits the user.  Ed Barlow and I favor the cue as multi-purpose.  No matter what, these treatments are not toys that must be used because they are there.  A cue does not guarantee game, but momentum will usually get us to game.  Two-suiters are several times more common than one-suiters.
  3. Double, and then follow with some action that shows extra strength, such as:  The extra strength after a double is not necessarily as strong as the immediate jump or cue.  I hate to double 2 without support for both majors, but a good hand with 4-major and 6-minor is possible.

You and I recognize good hands when we see them.  I use 22 suit points in the definition, but if 19 suit points look good enough, then do it.  Here are some guides for advancer.

The cue-er usually needs one more bid to describe his hand.  If the advance was 3NT:

If the advance was 3-major:

If the advance was 4-suit:  Treat 4 as forcing, and 4 passable.

Versus Higher Preempts

What is 4NT in a preempt auction after one of you has bid?  It means think about and "Do the right thing."  See next section.

The defense against 3NT as a minor suit preempt is:  Double = points; 4 takeout; other bids natural.

The defense against 4 and 4 Namyats is:  Double = takeout of their major.  If fourth seat uses Namyats, double is lead.

4NT After a Preemptive Opening

The "through the four-level for Blackwood" rule includes the words "except after a preemptive opening."  Therefore, when we open a weak-two, a three-bid, or a four-bid, 4NT is Blackwood.

When they preempt, and partner bids 4NT, his intent could be

What does 4NT mean had not come up for thirty years, and then there were two examples in one weekend.  Mark the following auctions, and we will discuss the results to see if we are on the same page.

A. 

2 DblPass 3NT
Pass 4NT

B. 

2 DblPass 4NT

C. 

2 Dbl4 4NT

D. 

2 DblPass 3
Pass 4 Pass 4NT

E. 

2 2 Pass 4NT

F. 

2 4 Pass 4NT

G. 

3 4 4 4NT

H. 

3 4 4 4NT

I. 

Pass 
3 4 4 4NT

J. 

4 DblPass 4NT

My bias is that 4NT to play is almost off the page.  An experiment showed that the frequency of "pick" is rare when partner has bid a suit.  For this, he has to be 5-5 in the other two suits and an opening bid or better.  I think 4NT should be "cue" if partner cannot cue-bid below 4NT.  In cramped auctions do not willy-nilly respond Blackwood.  Partner seldom knows enough to take charge based on the number of controls.

My answers:  A - Quantitative.  B -?  C - Pick.  D, E, F, G - Blackwood.  H, I - Cue.  J - Pick a minor.

What Does Robinson Say?

Robinson's defense against preempts (Chapters 22-24)
22.1 Takeout doubles through 4 .  Okay.
22.2 Over 2-major (but also 2 and Precision 2 ), the cue asks for stopper.  Without a stopper, system is pass or correct.  4-minor shows minor and other major.  4-cue (4 over 2 ) is two-suiter, and again system is pass or correct.  Stansby says leaping Michaels is one of his least favorite conventions.  Woolsey was asked if he ever got a good result from the convention, and said "No."  These hand types are rare.  No sale.  (An aside is that Ed Barlow says that the Bay Area is playing 1 - 3 and 1 - 3 as natural.  I have always done this.) 
An experiment on cue asking for notrump:  Needed seven or more in the minor headed by A-K-Q and at least 15 HCP.  No stopper in the bid suit, and no side four-card major.  Required 300000 to 500000 deals for 48 possibilities, and on half of those deals they get the cue.  Advancer had a 3NT bid about 1/3 of the time.  Of course there are cases where you will cue for notrump with a six-card suit, and should not with an A-K-Q-x-x-x-x suit.  The 5-5 major-minor hand occurs about five times more often, and with these you might treat an A-K-Q-J-x major as a one-suited major.

22.3 lebensohl over 2-anything — Double.  With us, 2NT over a major is do the right thing, which is tell me your better minor.  Over 2 — Double:  2NT is natural.
22.4 Cue-bid over double is choice of games.  Okay.

23.1 2NT over weak two shows 15-18 HCP.  I seldom have four cards in the other major.  We play suit bids not forcing, and a cue is usually Stayman but can be a very good hand.

24.1 and 24.2 Requirements for 3NT after two-bids and three-bids are reasonable.  Again, no systemic advances except for cue.

Versus Multi 2

The next chapter are sheets I use at nationals.  We did a multi 2 exercise on a Tuesday night.  We began with the ACBL pamphlet defense.  The preempting side was limited to 20 high card points for the exercise.  Therefore the senorita had that partnership bid (overbid) to the Larry Cohen limit.

Summary of Multi-2 Defense
  • Immediate double = 13 + points.
  • Takeout and responsive doubles at 2- and 3-level.
  • Penalty and/or card doubles at 4-level and higher.
  • All suit bids natural, except other major is cue in support of partner's bid major. 

  x  Q J
  A K x  Q J 7 x x
  A J T x x x  Q x x
  A K x  T x x
 
2 Dbl4 Dbl
4 5 All Pass

Although it didn't matter, it took a second try to get the double of 4 .  The pamphlet says doubles of 3 and higher after the double are business (page 12.)  The senorita's overbid rule says responder has at least four cards in each major.  Since hearts are breaking 4-1 or 5-0, 5 is a good contract.

  J T x  Q x x x x
  —  Q J 9
  A K Q J x  x x x
  Q J 9 x x  A x
 
2 3 3 3NT
4 5 Pass 5

That is what we did.  Once I bid 3 , we are away from the pamphlet.  I think maybe I should have doubled with a two-suiter.  Since, a double of 3 responsive, John had to either pass or volunteer 3NT.  The auction says spades are 3-2.  You can decide whether 4 or 5 is the better contract.
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