The McKenny suit preference signal is a defensive signalling system, also known as Lavinthal. You discard from a suit that you don’t like and a high card asks for the highest ranking of the remaing two suits and a low card asks for the lower ranking. The convention is also used when you lead a card that you know that partner is going to ruff – the size of the card led indicates which suit he should lead back to you.
The Michaels cue bid is a pre-emptive convention to show a two suited hand after an opponent has opened at the one level. A direct cue bid shows the two highest unbid suits. The convention is usually used in conjunction with the Unusual NoTrump (UNT) so that most two-suited combinations can be shown. Note that although Michaels/UNT are basically pre-emptive bids, some more experienced players play that they may also be very strong.
The Mini-Roman two diamonds is an opening 2D bid to show any three suited hand. The point range is around 11-14.
The Mini Splinter is generally a jump in a new suit at the three level after partner has opened with one of a major. It agrees trumps, shows shortage but is not game forcing. Of course, if you play mini-splinters then you cannot play weak jump shifts.
Minor Suit Stayman is generally a bid of 2S over partner’s 1NT opening and asks for a 4-card minor. I don’t like the convention but two variations are discussed in the link.
The Muiderberg convention is a Dutch treatment for 2h and 2s opening bids. The bids are pre-emptive and show 5 cards in the suit bid and 5-6 cards in an unspecified minor. The convention is best used in conjunction with the Multi two Diamonds convention to enable weak 6-card majors to be shown. Muiderberg differs from Lucas twos in that the second suit must be a minor (Lucas twos allow for both majors).
Multi Landy is a popular defense to 1NT in Europe. 2c = both majors; 2d = a long 6 card major; 2h = 5 h’s + a minor; 2s – 5 s’d + a minor. If you/partner have opened the 1NT, then you need to know the defense to Multi Landy. Multi Landy is very similar to the Cappelletti defense that is popular in the USA and the differences and advantages/disadvantages are given in Cappelletti or Multi Landy?
The Multi two diamonds is an opening bid of two diamonds that may have various meanings. Weak 6-card suit in either major are usually two of the alternatives, often with one or two additional strong options. If you play this convention, then you need to know what to do when your Multi two diamonds is interfered with, check the link. Also, if the opponents play the Multi, the you need to know a defense to the Multi two diamonds.
Namyats is a convention that uses opening bid of 4c and 4d in addition to 4h and 4s to describe hands with a good long major suit. The direct 4h or 4s bid is pre-emptive whereas 4c and 4d sho good opening bids of 4h and 4s (about 8 playing tricks).
The Negative Double is a convention used when partner has opened with a one level bid and RHO has overcalled. Double is best used to show the unbid major. There are various treatments, see the link.
New Minor Forcing (NMF) is used after partner has opened, you have responded with one of a major and partner rebids 1NT. A bid of 2 of an unbid minor promises at least invitational values and asks partner to define his major suit holdings and strength. The convention can also be used over a 2NT rebid but the PARROT convention is far superior.
Niemeijer is a complete scheme of responses, devised in Holland, to a two No trump opening.
Odds and Evens is a discard signalling system. Basically, an odd card says that you like the suit and an even card shows dislike.
Ogust is a conventional bid of 2NT when partner has opened with a weak two bid. It asks if partner is min/max and also if he has his points in or outside of his suit. The convention may also be used in the situation where you open the bidding and partner makes a weak jump shift at the two level.
PARROT – Puppet And Relay Responses to a jump Two no-trump rebid, is a combination of the ideas of the Wolff sign off and New Minor Forcing that enables a complete set of responses – sign off in 3d or 3 of a major or completely describe major suit distributions.
Puppet Stayman asks partner for both 4 and 5 card majors after a 1NT or 2NT opening. The drawback of this convention over 1NT is that responder must have at least invitational values and so you cannot play garbage Stayman.
Questem is a scheme for two suited overcalls. It is similar to Ghestem but allows for the direct cue bid of one of a minot toshow both majors, as with the Michaels cue bid.
Quest Transfers are a dramatic improvement on the space-consuming Smolen convention, alloowing for both invitational and game forcing hhands. They are best used in conjunction with 4-way transfers and the agreement that a transfer to a minor followed by a major is natural.
When partner uses RKCB and you have a useful void, then you need to know the responses to Roman Keycard Blackwood with a void.
Responding to partner’s strong two club opening details the treatment where two hearts is negative and two diamonds is waiting.
Responding to partner’s weak two opening. RONF (raise only non-forcing) is standard, with any new suit bid forcing. 2NT asks for a feature as standard but a popular convention is Ogust which asks how good partner’s weak two is.
REVAN is a very silly signalling system:
2,3,4 of a black suit - the other black suit
2,3,4 of a red suit - the other red suit
5,6,7 of any suit - that suit
8,9,10 of a minor suit - the other minor suit
8,9,10 of a major suit - the other major suit
A reverse is a bid in a suit that is higher ranking than the suit you previously bid and forces partner to bid at the three level in order to give preference. A reverse may be made by opener or responder and always shows mor cards in the first bid suit.
Revolving Discards are very similar to Lavinthal/McKenny. A discard from a suit shows dislike for that suit and a high card asks for the next suit up (clubs being above spades) and a low card asks for the next suit down (spades being below clubs).
Roman Key Card Blackwood is the variant of Blackwood that is most popular among more experienced players. It differs from basic Blackwood in that the king of trumps is included along with the four aces so that there are five ‘keycards’. The queen of trumps is also given special significance.
The Roman two diamonds convention is an opening bid of two diamonds to show any three-suiter hand. There are numerous variations and the point count may be anything you like.
The Rosenkrantz convention is used when LHO opens, partner overcalls, and RHO bids or makes a negative double. A simple raise to the two level by you shows support but lacking a top honour (A,K,Q) whereas a double (or redouble) shows the same level of support but promises a top honour. The link actually describes reverse Rosenkrantz in which the meanings are reversed.
The Rule of 2,3,4 is a set of guidelines, developed by Ely Culbertson, to aid you in kinowing how high to pre-empt depending upon the vulnerability of both parties.
The Rule of 11 is a mathematical rule that enables the defender not on lead to assertain declarer’s high cards in the suit partner led against a no trump contract when playing fourth best leads.
The Rule of 15 is a guideline as to whether to open or not in fourth seat. You add up your points and the length of your spade suit and if the answer is 15 or more, then open.
The Rule of 20 is a guideline as to whether to open or not in first or second seat. You add up your points and add the lengths of your two longest suits and if the answer is 20 or more, then open.