Landy

Landy, named after its inventor Alvin Landy[1] is the first of several conventional defenses created to compete against an opponent's one notrump (1NT) opening.[2] Landy is a 2♣ overcall of the opponents' 1NT opening to show at least four cards in each of the major suits; all other bids are natural. Requirements for the overcall vary from partnership to partnership: some require 5-5, some 5-4, and yet others only 4-4 (provided the overall strength is sufficient). The partner can take a preference to either major or make a non-forcing bid of a suit; 2NT is used as a forcing query.

This article is about the contract bridge bidding convention. For the surname, see Landy (surname).
Main articles: Contract bridge, Bidding system, Bridge convention, and Glossary of contract bridge terms

Extended Landy
West North East South
1♦Pass1♠Pass
1NT2♣

An extension was proposed by Ira Rubin in 1947[3] using 2♣ as a takeout request after a response or rebid of 1NT after a suit opening.[4] It implies more distribution and less strength than a double. It also applies in the passout seat.

Based on his initial inability to overcall the 1♦ opening directly, the bid of 2♣ by North shows five or more clubs and exactly four hearts. Similar uses were developed later by others.

Variations

Various additional modifications to Landy have appeared over years, by various authors. The original Landy convention is deemed obsolete amongst tournament players today in favor of more advanced conventions.[5] It is still very popular at club level.

Multi-Landy

A particular popular modification in the Netherlands is Multi-Landy,[6] a combination of Landy, the Multi 2 diamonds convention and the Muiderberg convention. In this modification, the 2♣ overcall is the same as in Landy, the 2♦ overcall shows a 6-card major suit, and 2♥ or 2♠ overcall shows five cards in that major suit and at least four cards in a minor suit.

Woolsey or Robinson

A variant developed by Kit Woolsey and Steve Robinson uses the same responses as Multi-Landy (above) but also includes a pinpoint double. A double would show a 4-card major and a 5-card or longer minor, a constructive 6-card or longer single-suited minor, or a hand of 19 high card points or more. After 2♣, advancer would bid 2♦ to show equal length in the majors and ask overcaller to bid their better suit. After 2♦, advancer would respond 2♥ to ask overcaller to pass or correct. Advancer would bid 2♠ showing non-forcing values in spades but invitational values for hearts. Advancer would bid 2NT with a forcing hand asking for further description of overcallers hand. Advancer would bid 3♦ with invitational values in both majors. 3♥ or 4♥ are pass or correct at that level.

gollark: Skynet has:- very simple publish/subscribe mechanism- actual protocol documentation- good performance- working client codeSPUDNET has:- vastly complicated node.js monolith which fails to scale- client code rewritten repeatedly because it's more complex and needs different environment things- documentation scattered across random Discord channels, some of which doesn't mention important features, plus similarly scattered code samples- 17249182649124 kilofeatures such as private channels, comm mode, the reporting system, HTTP-only mode- better acronym- potatOS
gollark: It's outdated, SPUDNET is better anyway.
gollark: No, I made skynet, for purposes.
gollark: https://github.com/osmarks/skynet
gollark: Yes, I did. I'm glad you agree.

See also

Notes
  1. Manley (2011), page 295
  2. Kleinman, Danny (2004). The No Trump Zone. Toronto: Master Point Press. p. 165. ISBN 1-894154-70-3.
  3. "Landy, Extended Landy". BridgeGuys. Retrieved 3 August 2013.
  4. Manley (2011), page 284
  5. "Landy". Bridge Bum. Retrieved 2 August 2013.
  6. Manley (2011), page 302.

References
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.