The object is to reproduce the smaller pattern above in the larger block below. The larger block is constructed of 27 x 27 pixel squares, each of which can be any two of three color choices: red, white, and black. When the cursor first rolls over a block, that block changes to its other possible color, and will remain that color until the block is clicked. When a rolled-over block is clicked, it returns to its original color, and can again be changed by a rollover.
