21st Mah Jong Border, a free online game

Instructions:
Mah Jong - border is simple: just click on two matching tiles (with the same pictures) which are ALSO ON THE SAME SIDE. Click the first tile, than the second tile and so on. If two selected tiles match, they disappear. Selected tiles are highlighted. You may select only tiles which have at one end side free (not touching another tile). If the two selected tiles match they disappear from the screen. The goal of Mah Jong - Border is to remove all the tiles from the board. If no more matches are available, the game is over.
If you try to select two tiles that do not match, an error sound will play.
To play again click on the replay button.
This game is also called Szechwan, Shichuan,Shisenso and Four Rivers