Siouxland Duplicate Bridge Club
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Advanced Concepts
Page Introduction
Page Introduction
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I do not intend for the pieces here to be complete discussions of any aspects of bidding or play but rather an introduction to various more concepts. I like writing about bridge, I find noting solidifies a convention and its nuances in my mind like writing about it.  However sometimes it is a waste of time especially if there is a neat concise job done elsewhere. ..........

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Comment
RHO Interfered in our No Trump Auction, Now What?
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There is more than one way to skin a cat (as the saying goes), most important is to agree with your partner in advance what approach you are going to ..........

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Lebensohl Part 2 over weak twos
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First if you did not read the previous No Trump Interference piece go do so now.  The essential Lebensohl treatment and tactics are not repeated here.  The lack of repetition is because over Weak Tw ..........

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When a Negative Double does not work
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Preface
I have a strong bias toward the adoption of a treatment to be used when a Negative Double (Neg-X) isn’t the answer.   I’ve struggled to persuade partners to embrace my approach. That likely means my explanations haven't been clear or seemed to somehow interfere with using a Negative Double. ..........

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Inverted Minors
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**Inverted Minors – Quick Summary**

- **1 – 2 [ALERT]**: Strong raise (Game Forcing)

  • Shows 12–13+ HCP, 4+ card support
  • May hold a 4-card major – opener explores “up the line”
  • ..........
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Third or Fourth Chair Opening Bids
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Third and fourth seat openings are different for a number of reasons, most notably partner is a passed hand and therefore "limited". (You know partner does not have a 12+HCP hand, nor any one of sever ..........

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Comment
New Minor Forcing

You can (and should) use New Minor Forcing when you are 5-4 in the majors and have invitational-or-better strength.

AK1053  K974  4  964 -- Partner opens 1C, you respond 1S, and partner bids 1NT. In this auction (after opener rebids 1NT), a bid of 2H by you should show a minimum response (6-9 points) with no interest in game -- it promises 5 spades and 4+ hearts and asks opener to pass or bid 2S if he prefers that suit. To show an invitational or better hand, bid 2D (yes, even with a singleton!) to force. This will allow you to find an 8-card fit in either major. If partner has 3 spades, he'll bid 2S and you'll raise to 3S to invite. If he has 2 spades and 4 hearts, he'll bid 2H and you can invite a heart game by raising to 3H.   

This example came from an article found in kwbridge dealing with NMF. The use of NMF with a 5-4 major hand was was 'news' to me so I wanted to include it in this description of the convention.  The key as set out above is the NMF availability and thus the special significance of  the 2 vs 2 (NMF) is the auction 1♣ 1♠ 1NT, preceding it "turning on" the NMF sequence.  No "One No Trump"?  No NMF.  I also treated NMF in one of my recent "Posers"  here is that bit repeated in full.  


New Minor Forcing (NMF) is one of those quick "Check the box", "Do you play..." questions. However, maybe not everyone has the same expectations of when it applies.  Because it is alertable you should be on your toes for both the correct time to use it and the alert when it happens. Here are some sample auctions.

1.

N E S W
1♣ P 1  P
1N P 2  

2.

N E S W
1 P 1 1♠
2 P 3♣  

3.

N E S W
1 P 1 P
1♠ P 2♣  

4.

N E S W
1 P 1♠ P
1NT P 2♣  

5.

N E S W
1♣ P 1♠ P
2NT P 3   

Which ones are NMF?

Continue

 

Comment
Reverses 101

I have lost track of how many times I have had partners say:  "I don't play reverses."  This is often part of pre-game discussion in which, having been oft burned, I will say something like: "Just FYI, I never reverse by accident."  Then if I get the "I don't play reverses." response.. Well, I have been warned.  Then I will generally say something like: "Oh, of course you do, you just don't think about it."  Which I have learned is not necessarily as true as I think it ought to be.  Lets delve a bit deeper.

First, what is a reverse?  A reverse is a natural bidding sequence in which the second suit named by a player is of a higher rank than the first suit..  For example, with opponents passing.  1  .... 1NT ... 2♠  The 2♠  bid is a reverse it shows a strong hand, How strong? Strong enough to force partner to bid an the 3 level to support the original heart bid.   It can also be used by Responder for example 1  ... 1  ...   [1NT, 2♣, 2♦, 2 ] .... 2  The 2♠ call is a reverse forcing the next bid up to the three level.  Generally a reverse is an unlimited bid and invites consideration of slam not merely game.  Here is an example hand where this came into play. 

A bridge auction is a conversation within the constraints of the limited available vocabulary follow along

1 

 I have at least 12 points and no 5 card major.

1   I have at least 7 points and 4 or more Hearts 
2 I have a real diamond suit.. I do not have 4 spades. 
2   I have at least 4 good spades and enough strength to force you to pick hearts at the three level 
3   Diamonds!! Did I mention I have Diamonds? 
3   I have 5 Spades and by extension 5 Hearts as well. Pick a major. 
 

 

 Given the above conversation consider the difference without the reverse.. If Responder starts with 1 Spade then rebids Hearts, twice, then Responder is never forcing Opener up another level in making their choice in the majors, Responder bidding Spades once and Hearts twice still shows a 5-5 major suit holding, simply not as strong. Responder's choice to bid Spades first, lacking the strength to reverse, is simply planning the auction.

 

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