Object: Uncover the hidden picture, using as few moves as possible.
 
Select a piece from the border by clicking on it. From the second move onwards, click on the destination square. The pieces can be placed freely, no rules apply. The piece will not be visible as not to obstruct the view.
 
The difference is in the way each piece flips the covers. The flipping power is similar to their attacking power in chess. However, the direction of flipping power changes with each move, rotating 90 degrees clockwise at each turn. For details read the help text for each piece (right mouse click).
 
There are 4 types of wall tiles (the default variant only uses orange tiles):

orange tile:	alternates between the two states orange/clear when attacked repeatedly.
brown tile:	alternates between brown/yellow/clear.
yellow tile:	disappears after being attacked, never comes back.
red tile:	disappears after being attacked, but only if no tile is left to the North, South, East, and West of it.

 
To speed up the game, you may want to switch the piece animation off (menu VIEW/OPTIONS).")
 
 
More freeware as well as real puzzles and games under http://karl.kiwi.gen.nz.
There you also can find out more about the stunning graphics.