cards before looking at any card face. The director is summoned if any player does not have exactly thirteen cards. The players look at their cards (without showing any card face to any other player at the table) and optionally arranges them in order (e.g. by suits) according to personal preference. The player designated as the dealer on the board makes the first call and the bidding proceeds clockwise until a final is established. The player to the left of initiates play to the first trick by making the opening lead. After the opening lead is made, dummy (declarer's partner) displays all his cards face-up on the table, sorted by suit and rank. Once dummy is laid out, the play of the cards continues in clockwise fashion with declarer stating the card to be played from the dummy followed by the partner of the opening leader playing his card and finally by declarer playing his. Each player shows their card face so as to be clearly visible to all, usually by placing it face up on the table directly in front of him. The four played cards are not mixed together as they are in rubber bridge trick collection. Instead, each player turns his card face down and places it in a row in front of him, overlapping left to right. If that player's side won the trick, it is placed straight up (pointing towards one's partner); otherwise, it is laid sideways (facing your opponents), so that it is clear how many tricks each side has won at any time. If a player orients his card the wrong way, his partner is allowed to point out the error. The play to all subsequent tricks is initiated by the lead of a card by the winner of the previous trick. After the play, the number of tricks won by each side is agreed. If all players' cards show the same orientation of cards, there is usually quick agreement; if one or more of the cards are not similarly oriented, a review of the tricks in the order played will usually determine where the difference has occurred, so that errors can more easily be corrected by mutual agreement. Each player then gathers only his own cards, shuffles them and replaces them face down in the board pocket from which they came. The shuffle ensures that the next player can make no inference