If the tile is not a double it is placed horizontally. If the tile is a double, it is placed vertically.
Players take turns. If a player does not have any dominoes which have a number of spots that matches one of the exposed ends of the chain, he must pass his turn. No dominoes are drawn from the boneyard. If a player has at least one domino that matches one of the exposed ends of the chain, that player must play a domino and cannot pass. Play may proceed off both ends of the chain, or from the exposed ends of the first double that is played once that double has had dominoes played from both its sides (Spinner option). That double is referred to as the spinner because the chain sprouts from all four sides of the domino. At most there will be four ends of the chain exposed; no other double may have additional dominoes played from it.
It is allowed to draw from the boneyard while a player can play a domino.
When summing the ends of the chain, a blank counts as zero points. Any double which is exposed sideways on the end of the chain is scored counting both ends of the domino. For example, if one end of the chain has a double four and the other end has a two, the score is eight (8) for the double four and two (2) for the two giving a total of ten (10) points. Once the hand is over, the dominoes held by the other players are totalled and rounded off to the nearest multiple of five (5). This total is added to the winning player or team's match score. If the hand was blocked or jammed, the total does not include the number of points held by the jamming player. If the number of points held by each player is the same, the hand is declared a tie and no extra points are added to any player's score. If all scores are less than agreed-upon number of points for the game (100-500), the game continues by playing another hand.
The player who dominoes or, if everyone passed, the player with the least number of spots, scores points equal to the number of spots on the stones in the hands of all other players.