All Threes Domino

Begin by drawing 7 domino tiles each for a two-player game. Put the first tile on the board to initiate the domino chain. Switch adding tiles to either end of the chain, making sure that the matching numbers touch. Gain points by creating multiples of 3 at the ends of the chain. Calculate your score by adding the numbers on the ends of the domino chain after each move. Continue playing until one player has no more of tiles or no more moves are possible. Whoever with the highest score at the end claims victory.