Object of the game: To use up all the tiles by playing them in quads. A quad is four consecutive numbers running in ascending or descending order, and played in a straight line. Blanks count only as 0 in 0 1-2-3.

When playing with a double-6 set, draw 4 tiles; a double-9 set, draw 5; and, a double-12 set, draw 6. Return to this same number of tiles after each turn.

Draw the correct number of tiles from the deck, then place them, faceup, in front of you. Use 2, 3, or 4 of the tiles drawn to make four numbers in a row: a quad. For example, playing with a set of double-6 dominoes, you draw 3-6, 1-2, 2-4, and 5-5. Begin play with a quad of all four tiles or with a quad of three tiles.

Once you have made a quad, leave it in your tableau and continue the process by again drawing the correct number of tiles from the deck.

Continue to draw more tiles from the deck one at a time, attaching enough new tiles to a number played already to make a new quad. But, if at any turn you can't make a quad, you lose. After awhile, your dominoes will start forming a real "traffic snarl!"

To make a new quad, you will usually add 2 or 3 dominoes. Sometimes you can do it with just one. This must be a domino with consecutive numbers that you can attach in sequence. For instance, you can play 7-6 after 9-8 -or before 5-4-if either is available.

As long as you make a quad at each turn, other number sequences you make don't matter at all.
Just be sure to observe these don'ts:
*Don't move any dominoes already played.
*Don't make a straight line of five or more numbers in a row. Four is the limit!