If you are looking for a challenge when playing free online mahjong games, then you should play Celtic Mahjong and be amazed. The objective of the game is to clear the board of all the tiles so you can move on to the next level. The only way to remove the tiles is by matching them with other tiles that have the same symbols on their faces. You can only pair tiles that are not blocked on the left or the right side. Traditionally, you can only pair the tiles that are completely identical, but in this game you can pair tiles that have the same image, even if it is in another color. The game more than 10 boards so you should play well and advance through the levels so you get to play all of them. The game gives you statistics about how many pairs are available for matching and also how many tiles are free. You also get to see the number of tiles that are left on the board. These statistics should help you in planning your move. When you seem not to find any more pairs to match, you can try using the hint button. This button will not always show you the best move and it will also cost you a lot of points so you should not use it until you are fully stuck. You can also see how much time you are taking; note that the time taken will determine how many bonus points you get at the end of the game so the faster you are, the more points you get. When you use the statistics, you should try and make sure that the number of free tiles keeps on increasing and also the available matches; this will show that you are on the right track to finishing the level.