Merge Block Number Puzzle is puzzling game for all ages to fun and relax. You have 5 hand cards in the beginning. When the hand card meets the card on the chessboard, numbers Three or more adjacent cards of the same number will trigger a triple- clear, and then merged to a new card with its number plus one. Upon each triple-clear, you will get a new hand card. You can hold up to 5 hand cards. When the quantity of your hand cards drops to 0, the game is over.