Select a tile and swap it with a neighbor to make 3, 4, or 5 in a row or column.
This will break the tiles and cause the ones above to drop and fill in the blank spaces.
New tiles are inserted at the top.
Special tiles will be left if you create a 4, or 5 matched row or column.
Subsequent breaks of these special tiles have special effects.
For Clear to Black, break groups of 3, 4, or 5 in a row or column to break each tile to set the background color down one level.
The goal is to set the tile background to black.
(Hint:) In later levels, you may have to break each tile multiple times.