All Threes Domino

Begin by selecting 7 domino tiles each for a two-player game. Set the first tile on the board to start the domino chain. Alternate adding tiles to either end of the chain, ensuring that the matching numbers connect. Earn points by forming 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 is the champion.