All Threes Domino

Start by picking 7 domino tiles each for a two-player game. Put the first tile on the board to start the domino chain. Alternate attaching tiles to either end of the chain, checking that the same numbers touch. Gain points by forming multiples of 3 at the ends of the chain. Calculate your score by totaling the numbers on the ends of the domino chain after each move. Continue playing until one player exhausts of tiles or no more moves are possible. Whoever with the highest score at the end is the champion.