Defeat your opponent and become the next master of memory! In this game you will be given 20 face-down tiles, and the players will take turns to reveal a pair of the tiles. During your turn, if you can click and reveal a pair of related tiles, for example a monkey and a banana, points will be awarded and you will be granted an extra turn. Note that you need to finish your moves within the given time limit, as indicated by the timer on the screen, or you will lose. If you can reveal multiple pairs of related tiles, you can receive more bonus points. But if the pair of tiles you revealed are not related, the tiles will be covered again and the turn will be passed to the other player. The game continues until all tiles are revealed, and the player who has scored more points wins. How many pairs of related tiles can you match consecutively?