All Threes Domino

Launch by picking 7 domino tiles each for a two-player game. Set the first tile on the board to begin the domino chain. Switch placing tiles to either end of the chain, checking that the corresponding numbers touch. Score points by creating multiples of 3 at the ends of the chain. Determine 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. The player with the highest score at the end wins.