LAW 58 - SIMULTANEOUS LEADS OR PLAYS

A. Simultaneous Plays by Two Players

A lead or play made simultaneously with another player's legal lead or play is deemed to be subsequent to it.

B. Simultaneous Cards from One Hand

If a player leads or plays two or more cards simultaneously:

1. If only one card is visible, that card is played; all other cards are picked up and there is no further rectification (see Law 47F).

2. If more than one card is visible, the player designates the card he proposes to play; when he is a defender, each other card exposed becomes a penalty card (see Law 50).

3. After a player withdraws a visible card, an opponent who subsequently played to that card may withdraw his play and substitute another without further rectification (but see Law 16D).

4. If the simultaneous play remains undiscovered until both sides have played to the next trick, Law 67 applies.

Law 57 - PREMATURE LEAD OR PLAY

Law 59 - INABILITY TO LEAD OR PLAY AS REQUIRED