The eight patterned tiles are
placed within the 3x3 board so that four color squares
are formed; some squares overlap or touch each other.
Now slide tiles into another position in which five
color squares appear.
To move a tile, simply click it. Use "Undo" and "Redo"
for the respective backward and forward moves of tiles
along your solution. Once you solve the puzzle, or have
some particular sequence of moves, you can use "Undo"
and "Redo" to check all your moves. Use "Restart" to
start the puzzle over again.