World Library  
Flag as Inappropriate
Email this Article

Reverse (bridge)

Article Id: WHEBN0005802399
Reproduction Date:

Title: Reverse (bridge)  
Author: World Heritage Encyclopedia
Language: English
Subject: Glossary of contract bridge terms, Flannery, Roman Club, Reverse, Bridge bidding
Collection:
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Reverse (bridge)

A reverse, in the card game contract bridge, is a bidding sequence designed to show additional strength without the need to make a jump bid; specifically two suits are bid in the reverse order to that expected by the basic bidding system. Precise methods and definitions vary with country, bidding system and partnership agreements.

Contents

  • Definitions 1
    • Standard American 1.1
    • Acol 1.2
    • Examples 1.3
  • Opener's reverse 2
    • High and low level reverse 2.1
    • Later bidding 2.2
  • Responder's reverse 3
  • Jump reverses 4
  • See also 5
  • References 6

Definitions

Standard American

In Standard American a reverse is defined by William S. Root[1] as "... a nonjump bid at the two-level in a new suit that ranks higher than the suit you bid first", and by Bridge World.[2] as "a non-jump bid in a new suit that bypasses a bid in a lower-ranking suit already bid by the same player".

Acol

The Acol definition is somewhat wider and includes any bid of a new suit by opener higher than two of their first suit.[3]

Examples

An example satisfying both definitions is:

1 – 1; 2

The last bid is a reverse.

Note responder avoided making an initial response of 1. Despite this, opener chose to bid 2, apparently seeking a fit that is unlikely to exist. This seemingly odd bidding is the "reverse" of what one would expect with a minimum hand (keeping the bidding low) and is used only with strong hands as it consumes bidding space.

A relatively easy way to identify the reverse uses the "gap" principle. A simple reverse is made when:

1. Opener opens one of any suit (except spades).

2. Responder bids at the one level.

3. Responder's bid leaves a "gap" between the two bids.

4. Opener then bids "into the gap" at the two level.

For example, in the example above, the response created a "gap" of the red suits. When opener bids a red suit that was "in the gap" then that constitutes a reverse.

Opener's reverse

This shows a minimum of 16 points or a 5 Loser Hand, depending on system, and at least 5 cards in the first bid suit.

Opener's reverse may face a weak responding hand, with which responder may have intended (over a simple suit rebid) to have rebid his own suit or taken a preference to opener's first suit at the two level. Opener's reverse still allows responder to rebid his suit at the two level, but a preference to opener's first suit must be at the three level. Thus, opener's reverse must show values at least one trick beyond the minimum needed to open.

For example, following 1 – 1 ; 2 – ?, responder may have a weak hand such as QJ86 K2 8762 Q74 and be planning to rebid 2, a simple preference, if opener made a typical rebid such as 1NT or 2, and to pass if opener rebid 2 or 2. However, following the reverse, he must now rebid 3. Thus the reverse has forced the partnership to commit to taking nine tricks instead of eight - based on the extra strength of opener.

Examples of reverse bidding sequences:

  • 1(by opener) – 1(by responder); 2(by opener - this bid is the "reverse")
  • 1 – 1; 2
  • 1 – 1NT; 2
  • 1 – 2; 3 Acol definition only
  • 1 – 2; 3 Acol definition only

A special case exists when responder makes a two-over-one initial bid. Since a two-over-one response shows more than a minimum, generally ten or more, opener does not need as strong a hand to reverse the bidding at that juncture. The modern trend is therefore to allow such a reverse bid after a two-over-one initial response with a minimum opening hand.[4]

Opener's reverse need not be in a four-card or longer suit; it can be made on a powerful three-card minor suit, such as AQJ. This approach is useful in investigating notrump contracts and when no other four-card suit is available to bid.

High and low level reverse

Reverse bids are generally considered to be forcing, with subtle variations depending on system:

  • A standard reverse (called a low level reverse in the UK), when opener's second bid is in a new higher ranked suit at the two level, is forcing for one round only, if it follows a one level bid by responder
  • A standard reverse following a two level bid by responder is unlikely to be passed before a game contract is reached, due to the additional points needed for the response
  • Under 2/1 game forcing any rebid by opener following a two level response, which is itself forcing to game, cannot be passed until game is reached
  • A high level reverse (a term used in the UK and in Acol), when opener's second bid is in a new lower ranked suit at the three level, is forcing to game.
  • Strong club systems such as Precision Club have much less need for reverse bids to show extra strength because natural suit bids are limited. In that context, a reverse generally shows playing strength rather than high cards.

These examples illustrate high and low level reverses:

  • 11; 2 : a standard reverse(or low reverse) by opener - the 2 bid is forcing for one round
  • 12; 3 : a high reverse by opener - the 3 bid is forcing to game

In some variants of 2/1 game forcing, the major-suit reverse after the sequence 1 – 2 doesn't promise extra values — opener may merely show a 4-card suit or a stopper.[5] Kaplan-Sheinwold treats 1 – 1M; 2 as a reverse although this is not standard in other systems.

Later bidding

Most partnerships play a rebid of responder's suit or of 2NT in response to opener's reverse as weak and other responses as forcing to game, including preference for the opening suit. Thus, after

1 – 1; 2 – ?

responder's rebids are:

2: weak, five card or longer heart suit
2: strong relay (Fourth suit forcing)
2NT: weak relay
3: forcing preference, three card or longer support for opener's clubs

Responder's reverse

Most standard methods treat a responder's reverse as a game force. Responder's reverse usually follows a same suit rebid or a notrump rebid by opener, because otherwise it would be treated as conventional. Typical responder's reverse sequences are:

1 – 1; 1NT – 2
1 – 1; 2 – 2

Jump reverses

The term "jump reverse" denotes a jump bid in a suit in which a non-jump bid would be a reverse. Jump reverses after a major-suit response carry a special meaning. Most expert partnerships utilise this bid to denote game-going values with shortness (often specifically a singleton) in the suit bid and support for partner's major suit. An example of a jump reverse is:

1 – 1; 3

Partnerships utilising this agreement commonly agree that in this situation a splinter bid (i.e. a double jump in a new suit) indicates a void.[6] This is also the understanding used in Bridge World Standard, though other options may also be used.

Jump reverses after a minor-suit response commonly show splinter raises, too.

1 – 2; 3

Jump reverses after a 1NT response to a minor opening are often used to indicate game-going values with shortness in the suit bid (a singleton or void) and six cards or more in the minor suit opened. This agreement facilitates partner in deciding the final contract (in most cases 3NT or a game or slam in the opened minor).

See also

References

  1. ^ The ABCs of Bridge William S. Root. 1998 Three Rivers Press. [ISBN 0-609-80162-7]
  2. ^ "The Bridge World: Bridge Glossary".  
  3. ^ Really Easy Bidding 1998 EBU [ISBN 0-9506279-2-5]
  4. ^ Root, William S. (1986). "Commonsense Bidding", p.48. Three Rivers Press, New York. ISBN 0-517-88430-5
  5. ^ "Bridge World Standard: Complete System BWS 2001".  
  6. ^ William S. Root and Richard Pavlicek, Modern Bridge Conventions.
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.