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Bridge Conventions
Jacoby 2 No Trump
This treatment is an integral part of Limit Raises.
Jacoby Transfer with Stayman Combined - This is a partnership
agreement, whereby the responder can show a 5-4 distribution
after the partner has opened or even overcalled with 1 No
Trump.
Jacoby Transfer
This convention, devised by Mr. Oswald Jacoby, is used by the
responder whose partner has opened the bidding with 1 No Trump,
2 No Trump or 3 No Trump. As the name of the convention indicates,
the responder will transfer the No Trump bidder to a more
favorable suit.
- Jacoby Transfer For The Minor Suits
- This convention, originally devised by Mr. Oswald Jacoby,
is used by the responder whose partner has opened the bidding
with 1 No Trump, and is an extension of the Jacoby Transfer
convention. The bridge community liked the original concept
of Mr. Oswald Jacoby and created new variations. The concept
of this convention was created for the responder, whose
holding includes a long Minor suit and, generally, very
little values.
- Jacoby Transfer with Stayman Combined
- This convention or treatment is employed by many partnerships
and has become part of the partnership agreement. The concept
began when it was realized that one convention would not
suffice when holding a specific distribution of 5-4 in both
Major suits. The treatment also is employed by partnership
agreements if the responder holds both 5-card Major suits.
- Minor Suit Stayman - This convention,
a variation of the Jacoby Transfer originally devised by
Mr. Oswald Jacoby, is used by the responder whose partner
has opened the bidding with 1 No Trump. The Minor Suit Stayman
convention was devised for specifically three types of holdings
held by the responder, and which will be determined during
the ensuing auction: 1. a holding with a 6-card plus Diamond
suit and weak values2. a 5-5 distribution in both Minor
suits and weak values3. a 5-4 distribution in both Minor
suits and possible slam values Four Suit Transfer Bids - This
is the extended version of the Jacoby Transfer originally
devised by Mr. Oswald Jacoby after
an opening of 1 No Trump by the responder to transfer to
all four suits.
- Two No Trump Response as a Relay to Three
Clubs - This treatment is used by many partnerships,
which utilize the response of 2 Spades as a slam try in
a Minor suit. The concept is easy since, after a 1 No Trump
opening by the partner, a 2 No Trump first response is a
Relay to Clubs.
Jordan Two No Trump
Also known as the Truscott Two No Trump and the Dormer Two
No Trump. A treatment to show support for Partner's suit after
an intervening overcall. It is especially used when playing
Limit Raises.
Kokish Rebids
In order to resolve several bidding problems after a 1 Diamond
opening and a 2 Clubs response, Mr. Eric Kokish has formulated a
series of responses to communicate better information regarding
the holding of the partner.
- Kokish Relay Bids - Mr. Eric Kokish
devised this mechanism to illustrate how it is possible
to show a holding of 25 to 27 high card points and a balanced
hand without having to consume bidding spade on the Three
Level.
The L-System
The L-System was devised by Mr. Hong Liu for light
to very light openings. The foundation of the L-System is
to open a Major suit with as few as 8 to 12 high card points,
and to open a Minor suit with as few as 10 to 12 high card
points on the One Level. Any opening bids on the Two Level
are considered preemptive in nature.
Laws
of Duplicate Contract Bridge 1997
Laws of Duplicate Contract Bridge. The American Edition as
promulgated in the Western Hemisphere by the American Contract
Bridge League. Effective May 27, 1997 and published and
distributed by the American Contract Bridge League. All copyright
laws are in effect. Also see:
Lebensohl
A convention to assist the partnership in clarifying the
responses to a 1 No Trump opening and after an immediate overcall.
The Lebensohl convention has also other applications.
Leghorn Diamond System
This bidding system was developed by Mr. Benito Bianchi
and Mr. Giuseppe Messina. It is quite similar to the
Roman System and also carries the designation of the Livorno
System.
Lightner Double
The Lightner Double is a lead-directing double bid by the
defenders of a voluntarily bid slam contract, developed by
the bridge pioneer Mr. Theodore A. Lightner. His premise
is that a double by the hand not on lead is conventional.
Little Known Conventions
We take you on a Guided Tour of conventions which
did not make the Top Ten List.
Limit Raises
A different approach to supporting partner's bid suit. Below
are several conventions, treatments and methods of responding
to an opening.
Long Suit Trial Bid
This bidding method, used after a Major suit opening, is
very useful if the responder shows immediate support to determine
whether the partnership should be in partscore or in game.
This web page also includes Short Suit Trial Bids and
Long Suit and Short Suit Trial Bids combined. This
concept has similar features as in the method known as Help
Suit Game Try or Short Suit Game Try.
Mexican Two Diamonds
Developed by Mr. George Rosenkrantz as a feature of
the Romex System, and an opening which has become fundamental
in the Romex System. The problem was that a hand containing
18/19-20/21 high card points could be opened with a Dynamic
1 No Trump, showing a balanced holding with six controls or
a holding just short of the requirements for a 2 Clubs opening.
Michaels Cuebid
This convention allows one partner to inform his partner
about a 2-suited hand. Distributional hands are very powerful,
and this convention instructs the user how to use this tool.
- Modified Michaels Cuebid - A variation
of the Michaels Cuebid played in Canada. An effective and
efficient variant which uses Jump Cuebids.
Moscito
This bidding system was developed and devised first by Mr.
Paul Marston and Mr. Stephen Burgess. If one takes the
first four letters, then it builds an acronym for Major Oriented
Strong Club. For its foundation, Mr. Paul Marston and Mr.
Stephen Burgess used to a considerable extent the Symmetric
Relay system and applied their version especially in auctions
where the opening side has the balance of power. Originally,
the Moscito System was a Strong-Pass system, but was altered
in 1992 to the following structured bidding sequence.
- Moscito Byte - Moscito Byte,
as a variation of the original Moscito bidding system, was
researched and devised with several targets in mind, that
of entering and exiting the auction as quickly as possible
and find a contract, especially in a Major suit, that of
determining whether game values are present, and if slam
should be explored. and that of increasing the difficulty
of communication between the opponents.
Movements
A movement is a schedule of progression for bridge players,
which indicates the seat to be occupied in succession of the
play. This schedule also indicates the boards and the numbers
of the boards to be played by each player during each round
of play. It is the obligation of the director to announce
the movement to be followed before play commences. We have
included several of these movements and will be adding more.
Multi Two Diamonds
The Multi 2 Diamonds opening was devised in the 1960s by
Mr. Terence Reese and Mr. Jeremy Flint, assisted by
fellow bridge partners Mr. Robert Sheehan, Mr. jonathan Cansino
and Mr. Irving Rose. The concept behind this opening is to
make the interference by the opponents difficult and to obstruct
their line of communication by an opening on the Two Level.
No Trump Opening
When, and with how many high card points should you open
1 No Trump or 2 No Trump. See also:
- Weak No Trump Opening How can the
responder most accurately describe his hand after his partner
has opened the auction with 1 No Trump. Which conventions
allow him to provide the necessary information. The following
list of conventions may help the individual bridge player.
- Allen - A convention allowing responder
to explore for a 4-4 Minor suit fit.
- Four Suit Transfer Bids - This
is the extended version of the Jacoby Transfer after an
opening of 1 No Trump by the responder to transfer to all
four suits.
- Jacoby Transfer - A convention
for the responder to show length in the Major suits.
- Jacoby Transfer For The Minor Suits
- This convention, originally devised by Mr. Oswald Jacoby, is used by
the responder whose partner has opened the bidding with
1 No Trump, and is an extension of the Jacoby Transfer convention.
The concept of this convention was created for the responder,
whose holding includes a long Minor suit and, generally,
very little values.
- Smolen A convention allowing
the weaker hand to force the No Trump Bidder to become the
declarer. Preempts - These are bids by any player, which
increase the level of bidding and are used as a form of
obstruction. They can be disciplined or undisciplined preempts
and can change according to the state of the vulnerability
of the partnership.
Preemptive Bids
What are the requirements for a Preempt at the Three Level
and higher. Is there a universal standard for Preemptive bids.
We present the basics and points to consider. What information
are you giving your partner when you make a Preemptive bid.
Relay Bids
These are minimum bids unrelated to the actual holding of
the bidder, and are intended only to keep the auction open,
in order that the partner can continue to describe his hand.
We all use them in one form or another.
Relay Precision
Written by Mr. Hugh Grosvenor and Mr. Ian Robinson.
This is an adaption of methods developed in New Zealand over
the last few years. It is a strong club system, similar in
many ways to Precision Club but using relay continuations
over all of the openings.
Reverse Bid
A method to show No Trump strength without No Trump distribution.
- Ingberman Convention - This is
not a variation of the Reverse bid, but rather a concept
devised by Mr. Monroe Ingberman to be used by the
responder of a Reverse bidder to show minimum values through
a Relay bid of 2 No Trump.
Rules
A compilation of the mathematical Rules, which help in defense
and offense through counting of the leads, whether or not
to open in Fourth Seat, etc. In the list below, you can click
on the specific Rule which might interest you.
If you wish to include any convention listed here, or
any other convention, of the game of bridge in your partnership
agreement, then please make certain that the concept is understood
by both partners. Be aware whether or not the features or
the convention are alertable or not and whether an announcement
should or must be made. Check with the governing body and/or
the bridge district and/or the bridge unit prior to the game
to establish the guidelines applied. Please include the particular
feature on your convention card in order that your opponents
are also aware of this feature during the bidding process,
since this information must be made available to them according
to the Laws of Duplicate Contract Bridge.
We do not always include the procedure regarding Alerts
and/or Announcements, since these regulations are changed
and revised during time by the governing body. It is our intention
only to present the information as concisely and as accurately
as possible.
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