World Library  
Flag as Inappropriate
Email this Article

Snapdragon double

Article Id: WHEBN0008808351
Reproduction Date:

Title: Snapdragon double  
Author: World Heritage Encyclopedia
Language: English
Subject: WikiProject Contract bridge, Bridge conventions, Norman Kay (bridge), Grosvenor gambit, Stayman convention
Publisher: World Heritage Encyclopedia

Snapdragon double

Snapdragon double (also known as competitive double and fourth-suit double[1]) is a bidding convention in contract bridge. It is a call of double by fourth hand, when three different suits have been bid by the first three players and shows a good holding in the fourth suit (generally six cards, though some partnerships allow five) and tolerance for partner's suit.

The word snapdragon derives from antirrhinum, which is a genus of plants commonly known as snapdragons from the flowers' fancied resemblance to the face of a dragon that opens and closes its mouth when laterally squeezed, which as a result produces a snap-like sound. The reason for this designation is that the Snapdragon double can only be triggered by the player in the fourth seat after the three previous players have each bid a different suit.

For example, after 1 – 1 – 1, a double would show a hand with primary clubs and heart tolerance. The definition of "tolerance" varies among partnerships, and may include any doubleton, only honor doubleton, or require three-card support. A typical hand for most partnerships would be  Kxx  Kx  xx  QJ10xxx.

In standard bidding, this would be a penalty double, but it is extremely rare to have such a double at the one level, and even there, the opponents may have a better spot. An alternative modern interpretation is for this double to show "cards," and simply ask partner to do something intelligent.

Players choosing to make Snapdragon part of their partnership agreement should agree on:

  1. The maximum level to which it can apply. The generally accepted guideline is not to employ it beyond the two-level.
  2. The preferred minimum strength and features of the doubling hand at each level.

See also

  • Article by Bob Crosby
  • Article by Bridge Guys


  1. ^ Francis, Henry G., Editor-in-Chief;  
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, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for 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.