M J Bridge
♦
♠
♥
♣
Bidding
Conventions K to P
A convention in which an opening bid of 3NT asks for information about specific aces.
An alternative system of responses to 1NT, which does not use Stayman and transfers in the standard way.
A variation on Blackwood in which the asking bid is the suit above the agreed suit.
Kokish (or Kokish relay)
A relay method for showing balanced hands of twenty five or more points below the level of 3NT.
A convention similar to Blackwood which concentrates on asking for controls in the two suits of one colour.
This convention is now rarely encountered and is not considered on this site, although the name is sometimes used incorrectly as an alternative for ‘Voidwood’ or ‘Exclusion Blackwood’.
A conventional method of competing over an opening 1NT in which a bid of 2♣ promises both majors.
A term sometimes used to describe a ‘How good are you?’ trial bid when there is only one bid available.
This will usually follow either a splinter bid or a fit-
An alternative set of responses to five-
A convention promising 5-
(see also non-
Lebensohl
A conventional method in which an artificial bid of 2NT helps distinguish between competitive and constructive bids in a new suit.
It is most commonly used by responder when partner opens 1NT and RHO makes a suit overcall,
but is also used when partner doubles the opponents’ opening weak two,
when partner doubles the opponents’ multi 2♦ opening,
and on responder’s rebid after three suits have been bid (this link takes you to the page following a major suit opening).
In a competitive auction it will in general pay to bid to the level of the fit -
The link takes you to the situation in which advancer is raising partner’s overcall.
The double of a freely bid slam asking for an unusual lead.
Limit raise
This is a bid by responder which shows the maximum potential of the two hands if partner has no better than a basic holding for his bid.
Partner is invited to pass with a minimum or to raise if he has more than he has shown already. The most common examples of such bids are direct raises facing opening bids of 1NT, 2NT, or one of a major.
A style of trial bid, most frequently used in search of a game after a major suit has been agreed at the two-
A method for evaluating the potential of an unbalanced hand once a suit fit has been identified by either partner in the the side which opened the bidding.
A convention by which an opening bid of two of a major promises a weak two-
Jack Marx and the twins Jim and Bob Sharples were responsible for the invention of, the development of, or the popularisation of, a number of bidding conventions.
Amongst these were two-
Also sometimes known as Sharples-
A rebid by opener following partner’s invitational raise of his opening one of a major. Responder will bid a void or singleton if he has one and sign off in four of the major otherwise.
A rebid by responder returning to partner’s first suit and not promising any additional strength.
An immediate cue-
It promises either both majors, or the other major and a minor.
Single jumps in a new suit which may in particular sequences promise support for partner together with either a singleton or a void in the bid suit. These bids are usually played as forcing to the three-
They are most frequently played by opener on his rebid, but the link above will take you to their use by responder from where there are links to alternative contexts.
Minor suit Stayman
A bid asking partner to bid a four-
Most frequently this will be a bid of 2♠ facing partner’s 1NT opener
or a bid of 3♠ facing partner’s 2NT opener.
A variation on Blackwood in which four of the agreed minor is itself used as the asking bid.
Mixed (or semi-
Somewhere between a preemptive raise and a limit raise. Most commonly it will be a jump to three of partner’s major showing four-
A variation on the Flannery convention.
An opening bid of 2♥ is used to show a hand of eleven to fifteen points with five hearts and four spades.
A convention by which an opening bid of two of a major promises a weak two-
Multi 2♦ -
In this method an opening bid of 2♦ will show a number of hand-
For a defence to the multi see ‘the Dixon defence’.
Multi cue-
See First or second round controls
Multi-
A conventional method of competing over an opening 1NT.
An opening bid of four of a minor setting the suit as one of the majors.
These are opening bids of two of a suit which promise a strong hand based on length and strength in the suit bid. Sometimes the bid will include the possibility of a two-
Negative free bid
A non-
This agreement does not form part of my recommended methods.
It is discussed briefly in the following contexts:-
opening bid of one major -
opening bid of one major -
opening bid of one minor -
A conventional rebid by responder following partner’s 1NT rebid. The convention enables responder to learn more about opener’s major suit holdings.
New suit at the three-
Unless such a bid has been forced by partner, perhaps with a take-
An extension of ‘leaping Michael’s’ (see above) in which an immediate cue-
Many players use a direct raise of 1NT to 2NT as part of a transfer system. If so they have to create an artificial sequence to show the balanced limit raise to 2NT. The most frequent method is to make a Stayman enquiry of 2♣ followed by a rebid of 2NT. If playing this method opener must not assume that responder holds a four-
A convention to distinguish between a cue-
A style of trial bid though frequently not referred to as such.
It usually follows minor suit agreement and searches for a contract of 3NT.
Following a single-
Opponents’ suit
A bid in the opponents’ suit, frequently referred to as a cue-
A form of take-
Typically an immediate double of a preemptive opening at the three-
Other major at the the three-
Following an opening bid of 1NT, a Stayman enquiry, and a response from opener in a major suit then a bid in the other major at the three-
A concept which applies when the partnership holdings in a suit combine to give a certain stop in a no trump contract.
It is considered in this section, and at various points subsequently -
Most doubles can be classified as either ‘take out’ or ‘penalty’. Note that this will not depend on what the bidder wants it to mean at that particular moment -
A conventional method for overcalling 1NT.
(Also known as Cappelletti and Hamilton)
The Precision system is a popular bidding system based on a strong artificial one club opening and five-
This bid is included as a possible use for an opening bid of 2♣, but it is unlikely to be included as part of an Acol-
In its simplest form a responder employing the the Stayman convention (see below) will be guaranteeing a four-
Where it is your turn to bid following a bid by your Left-
A bid which does not reflect the actual holding, usually made to mislead the opponents.
A jump to 3NT facing partner’s one of a major showing four-
A variant on five-
Occasionally played in a similar manner over 1NT.
Opener |
Overcaller |
Responder |
Advancer |
Opener's rebid |
Responder's rebid and beyond |
Overcaller's rebid and beyond |
The continuing auction |