Score a number of points equal to the number of unplayed dominoes. If an odd number of ninepip dominoes is played during a trick, the direction of play changes for the nuxt trick. Doubles may be played as either one or two pieces, at the player's discretion. Tiles should be sorted by the lower number. Tiles should be sorted by the higher number.
Play starts going Up .
Whether UP or DOWN, the first player of a trick plays a set of dominos containing a played number on one side. The next player must play a set of the exact same size, or pass. Sets continue to be played until everyone passes, ending the trick. A player may play multiple times in the same trick. The last person to lay down a set of the given size leads the next trick.