Change order of colors to match at least three blocks of the same kind(horizontally, vertically and diagonally) in order to remove them.
Special blocks may appear during the game [1]eliminates all the blocks of the same kind [2]eliminates the blocks vertically [3]eliminates the surrounding blocks [4]eliminates all the blocks horizontally [5]the block that can only be removed from the board with the use of other special blocks.