Laws of Duplicate Contract Bridge

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Laws of Duplicate Contract Bridge is the official rule book of contract bridge promulgated by the World Bridge Federation. The first Laws of Duplicate Contract Bridge were published in 1928. They were successively revised in 1933, 1935, 1943, 1949, 1963, 1975, 1987 and 1997.^[1] The Laws are effective worldwide for all duplicate bridge tournaments sponsored by WBF, zonal, national and subordinate organizations (which includes most bridge clubs).

1 History
2 Contents
- 2.1 Irregularities
3 See also
4 References
5 External links

[edit] History

Through the 1930s, the Laws were promulgated by the Portland Club of London and the Whist Club of New York. From the 1940s onwards, their roles were supplemented by British Bridge League and European Bridge League on European side, and American Contract Bridge League Laws Commission from the American side. From the 1975 onwards, Laws were also promulgated by the World Bridge Federation Laws Commission.

The latest revision became effective worldwide 1 September 1997. (ACBL inaugurated the revision on May 27 1997.)

[edit] Contents

There are 93 articles (Laws), organized in 11 chapters:

Definitions
Preliminaries
Preparation and Progression
General Laws Governing Irregularities
The Auction
1. Correct Procedure
2. Irregularities in Procedure
The Play
1. Procedure
2. Penalty Card
3. Irregular Leads and Plays
4. Tricks
5. Claims and Concessions
Proprieties
The Score
Tournament Sponsorship
Tournament Director
Appeals

In addition, there is an Appendix "Special Conditions Pertaining to the Use of Bidding Boxes and Screens"^[2], which cover the procedure and ammendments in effect when bidding boxes and screens are in use.

Due to growing popularity of online bridge, a version more suited for Electronic Bridge was issued by WBF in 2001.^[3]

[edit] Irregularities

Apart from definitions of basic rules and procedures, a large part of the Laws deals with handling of irregularities that may occur at the table. As such, the Laws are primarily used as a reference book for tournament directors rather than by ordinary players (although they are expected to get acquainted with basic procedures and principles). After an irregularity occurs, the tournament director should be summoned immediately by any player (except, in general, by the dummy) and he may impose one of more of the following penalties to the side that committed the infraction of the rules:

Transfer of trick(s) to the opponents,
Force the offender or his partner to pass in one round or to the end of the auction,
Assign a penalty card, i.e. a card that must be played at first legal opportunity,
Impose lead restrictions if the offending side becomes the defense.
Award an artificial score, i.e. assign so-called average-plus (typically 60% of matchpoints or +3 IMPs on the board) to the non-offending side, average (50%/0 IMPs) for the partially responsible side, or average-minus (40% MPs/-3 IMPs) to the responsible side
Award an assigned score, i.e. assign the final contract and result of the deal to the one most likely to occur had the infraction not been committed, but which favors the non-offending side.

The director's decision may further be appealed to the appeals committee whose ruling is considered final.

Handling of the most frequent irregularities is summarized below, without entering into fine details:

[edit] Revoke

Revoke (failure to follow suit when a player is able to) is handled by laws 61-64. A revoke may be corrected (correct card substituted) without trick penalty before any player of the offending side plays to the next trick; otherwise, it becomes established. If a revoke is corrected, the exposed card becomes a penalty card and the opponents may change their played cards as they see fit (however, the revoking side may not take advantage of those seen cards—see Alcatraz coup). When a revoke is established, in general, one of subsequent tricks won by the offending side is transferred to the opponents. If the revoke card has won the trick, that trick is transferred too. (If the offending side did not win any subsequent tricks, no penalty is assessed). Additional tricks can be transferred if the revoke has caused more damage to the opponents than was redressed by those penalties.

[edit] Call out of turn

When a player makes a call when it was not his turn to bid, the laws 30-32 specify various penalties depending on whose turn it was, and whether the call out of turn was a pass, bid, or a double/redouble. Briefly, after a pass out of turn, the penalty is that the offender must pass once or to the end of auction. After a bid, double or redouble out of turn, his partner must pass to the end of auction. In addition, the offending side may be subject to restrictions in the opening lead. As a special case, no penalty is assessed when it was right-hand opponent's (RHO) turn to bid and he elects to pass. Finally, an adjusted score can be awarded if the redress was not adequate to the inflicted damage.

[edit] Insufficient or inadmissible call

After a player makes an insufficient bid (law 27) (of lesser rank than the last bid at the table), his LHO first receives the option to accept it, in which case no penalty is assessed. If rejected, the offender may replace the bid with a higher legal and natural bid in the same denomination without penalty (but the information remains unauthorized to his partner). If he elects not to, or if the substituted bid would have been conventional, the offender's partner must pass to the end of auction.

An inadmissible double or redouble is cancelled and must be substituted by a legal call, and the offender's partner must pass to the end of auction. The penalty does not apply if LHO has called after the inadmissible call.

[edit] Exposed card

When a card is exposed by one of defenders (law 50), by means of holding it in such a position that it can be plausibly seen by the offender's partner, in general, it becomes a penalty card. If exposed inadvertently, depending on its rank, it may be a minor (2-9) or a major (10-A) penalty card; however, any card may become a major penalty card if it was played out of turn. In any case, the penalty card must be played at first legal opportunity, which allows the declarer to organize his play to take advantage of the situation. However, the offender may play a honor of the same suit instead of the minor penalty card. There is no penalty whatsoever for the exposition of declarer's cards, provided it was played inadvertently (a card apparently played advertently may not be retracted except for the purpose of revoke correction).

If a card is exposed during the auction (law 24), it may become a penalty card, and offender's partner may be forced to pass to the end of auction.

[edit] Play out of turn

In general, only the defenders are subject to penalties for opening lead or other play out of rotation (law 53-59). The card lead out of turn becomes a major penalty card; in addition, the declarer may require from the offender's partner to play highest or lowest card in the suit led.

An opening lead out of turn (law 54) is perhaps the most frequent infraction. If the wrong defender makes the opening lead, the to-be-declarer has the following options:

Accept the lead, spread his hand and become the dummy, and his partner declarer
Accept the lead, but select whether to play second-hand from his or dummy's hand
Refuse the lead. The illegaly lead card becomes a major penalty card

[edit] Unauthorized information

Unauthorized information (UI) (law 16) is any information that a player obtains by means of:

Partner's remarks, questions, mannerisms, hesitation and similar,
Information from calls and plays which were legally withdrawn and/or substituted as a consequence of that side's infraction (the non-offending side may use this information),
Overhearing remarks at other tables or seeing a wrong card.

Reception of unauthorized information is not an infraction per se. However, the player which (might have) received it has severe limitation that (s)he may not act on the basis of it (even if the action is reasonable), but must select a logical alternative instead. The definition of logical alternative is fairly strict, and includes all but practically inadmissible alternative actions. However, in the (fairly unlikely) event that the logical alternative becomes a successful one rather than the action suggested by the UI, no further redress is given to the non-offending side.

The exception is when the player receives an UI inadvertently, as by overhearing remarks at other tables. In that case, the director may adjust positions, appoint substitutes, or award an adjusted score.