Object of the game: To discard all but one tile in the set by removing each tile one at a time and leaving only the 6-6 remaining in your tableau at the end of the game.
Play: Draw 4 tiles from the deck and place them faceup in a horizontal row in front of you.
Remove any tile in the tableau that has exactly one pip less than any other tile in the tableau.
Draw 4 more tiles and place them, faceup, on top of the three remaining tiles in your tableau and in the "empty" space of the tile removed with the first play. The files underneath other tiles should be completely covered so that none of the pips are showing.
Again, remove any tile in the tableau that has exactly one pip less than any other tile in the tableau, as you did with your first play. Then draw 4 more tiles, and so on, continuing in this same manner throughout the game. If at any point in the game there is more than one play that could be made, it is usually best to remove the tile with the lowest number of pips.
Reprinted with permission of Sterling Publishing Co., Inc., NY, NY from GREAT BOOK OF DOMINO GAMES by Jennifer Kelley, ©1999 by Jennifer Kelley. (The Sterling book is available as PUREMCO'S GREAT BOOK OF DOMINO GAMES)