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 placing tiles to either end of the chain, ensuring that the corresponding numbers meet. Score points by creating multiples of 3 at the ends of the chain. Figure out your score by summing the numbers on the ends of the domino chain after each move. Proceed playing until one player exhausts of tiles or no more moves are possible. The player with the highest score at the end wins.