M J Bridge
Conventions Q to S
An extension to RKCB in which following partner’s response to 4NT a bid in the next non-
A little known but excellent method of showing both invitational and game-
An acronym for rank, colour, other which can apply to a number of different situations.
This link takes you to its use as a system of two-
The simplest transfer system in which a response of 2♦ to 1NT promises hearts and a bid of 2♥ promises spades. The system is vastly more powerful than one based on weak take-
Such transfers are commonly used over both 1NT and 2NT opening bids, and also over artificial 2NT opening sequences.
The link takes you to the continuations following a 1NT opening bid.
Redouble is, of course, a bid -
A variation on Blackwood in which 4♦ and 4♥ are used as the asking bids following clubs and diamonds agreement respectively.
A form of take-
This term usually refers to a a rebid by opener which is higher than two of his first suit. Such a bid requires partner to bid at the three-
There may or may not be constraints on the strength of the hand, and the bid may or may not be forcing.
This link takes you to the page on opener’s rebid, but opener should in fact think about these possibilities before making his opening bid.
A variation on the ‘Drury’ convention in which opener’s rebid of 2♦ promises values and other responses are light.
A variation on two-
A conventional method for overcalling 1NT.
On this site Landy, Asptro, Cappelletti, D.O.N.T., and transfer overcalls are considered for use in this situation.
An improvement on standard Blackwood in which the king of the agreed trump suit is counted as a fifth ace, and in many sequences it is also possible to locate the queen of trumps. As with standard Blackwood a cue-
A lead directing redouble by advancer.
Rubinsohl (sometimes Rubensohl or transfer Stayman)
A method combining the best of transfers and the Lebensohl convention when RHO overcalls partner’s opening bid of 1NT.
Sandwich no trump (or sandwich 1NT)
A bid of 1NT after LHO has opened, partner has passed, and RHO has changed suit.
This use of the bid suggests a two-
Following the sequence 1NT, 2♣, 2♦ the rebid 3♣ is used as a shape-
There may be artificial extended sequences attached, and the idea may be extended to apply to the bid following a positive response to the original Stayman enquiry.
A method by which take-
A suit which is likely to play for no losers even when facing a void in partner’s hand. This is usually interpreted as AKQJxx or AKQxxxx.
Important in making a bidding decision, and specifically when partner opens a strong two.
A style of trial bid which is essentially natural.
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.
Also sometimes known as Marx-
A style of trial bid which informs partner of a shortage.
A method of showing 5-
Responses of 4♣ and 4♦ to an opening 1NT or 2NT, setting the suit as hearts or spades respectively.
This link takes you to the 1NT page.
An opening bid of 4NT which asks partner to name any specific ace which he might hold.
A variation on the Blackwood 5NT king ask. This version asks for specific kings rather than how many kings.
An unnecessary jump in a new suit shows support for partner together with a void or singleton in the bid suit. It is usually played as game-
My own variation on two-
This is really a guideline rather than a convention, but it is included here to help locate it.
In deciding whether or not a suit is of sufficient quality this method offers an excellent ‘rule of thumb’ guideline.
By partnership agreement the convention may ask for a four-
The link takes you to the basic version of four-
Stayman in doubt
Following an opening 1NT, a Stayman enquiry and a major suit response, responder can rebid 3♦ (artificial and forcing) to agree partner’s suit. The bid may be used on 4-
An opening bid of 2NT to show a strong balanced hand on some prescribed range -
A number of advanced systems have 1♣ as their only strong opening bid, typically on sixteen or more points.
This is not part of any system which I recommend. However, it is vital that you have agreements on how to deal with such methods.
The traditional version -
This term is used for an opening bid of 1NT which is made on a strong balanced hand.
It will be made on a defined range, typically 15 to 17 or 16 to 18.
Systems incorporating a strong no trump are more common than weak no trump systems when viewed on a world-
As this site concentrates on a system based around a weak no trump the strong no trump is only considered as something which your opponents might do.
These are opening bids of two of a suit which promise a strong hand -
Artificial strong opening bids showing two-
These bids are not standard.
Bids which agree partner’s suit and give some further information such as strength or shape.
A means by which opener can distinguish between three-
|Responder's rebid and beyond|
|Overcaller's rebid and beyond|
|The continuing auction|