Power-ups and special in-game moves

Three power-ups are available in the game if you need help playing a level: 

1. Undo - This power-up moves from the matching area to the tile that was most recently added, returning it to its original position on the table. If the matching area is empty, an undo cannot be used. 
2. Hint - this power-up can be used to move available tile(s) from the table to the matching area to make a match. 
3. Shuffle - This power-up removes all tiles from the table, reorders them randomly, and replaces them.