Law book and ethical judgments
Law book rulings are made by immediately applying The Laws Of Duplicate Bridge 2007. It is a good idea to take the laws to the table and to read briefly the appropriate ruling to the players. The two exceptions are for the lead out of turn and the revoke, both of which are worth memorising. Your ruling enables the players to continue the game after making the correct adjustments for the error made initially.Adjusting the score
An artificial adjusted score, an average, average plus, or average minus, is given when the board cannot be played, perhaps through an error made by one of the competitors. An average minus (40%) may be given to a pair directly at fault, and average plus (60%) to the pair who are in no way at fault, and an average (50%) to a pair who may be only partly at fault. An average minus may be lowered to the mean score of the pair if they have scored less than 40% on the previous boards, similarly an average plus may be increased. The 2 scores do not need to balance.Insufficient bid
Left hand opponent (LHO) may accept the bid as legal and the bidding goes on from the level of the insufficient bid. But the LHO must know the other alternatives.Calls out of turn
Please note that a call includes a pass, a bid and a (re)double for which different rules exist!An opening lead out of turn
The director must offer declarer 5 choices in understandable English or offer a card to read with the following alternatives:The revoke
Has the revoke been established? Yes if the offending side has played to the next trick. If not the revoke must be corrected and the illegal card is a major penalty card.Changes of call
First it has to be decided whether it was a mechanical error with the bidding box or a mental error. If a mechanical error it can be changed without penalty provided that partner has not bid. If he has bid it is too late to change it. If LHO has bid the error can still be corrected and LHO’s call can be changed if he wishes.Penalty cards
Nearly all penalty cards are “major”. The only minor penalty card is a single card below an honour, that has been dropped or inadvertently played, e.g. 2 cards are played at the same time. If a player has a minor penalty card he cannot play another card of the same suit below the rank of honour (but can play an honour) until he has first played the penalty card. Partner has no lead penalty but there may be unauthorised information.Misbid or wrong explanation (misinformation)
A bid is made and alerted. The explanation is incorrect and the opponents are damaged. This is illegal because the opponents are entitled to know the system being played and they have been misinformed. Also partner of the offender should base his subsequent actions as though the explanation had been correct.