Mahjong Solitaire Challenge

Description: Match pairs of identical tiles in this classic puzzle game.
Instructions: Remove all tiles from the board by matching pairs of tiles. Just click on two identical tiles to remove them. Note that only free tiles can be removed. A tile is free if no tile is on top of it, and if its left or right side is not blocked by another tile. All puzzles are guaranteed to be solvable. In case there are no more matches possible, use the undo button to reverse your moves and try again.
Control Scheme:
fire: left mouse
movement: mouse