ref: f279c5eba035d018a8805a65a8a245b8b8d2ea2e
dir: /html/unruly.html/
Unruly <p> Colour every square either black or white, in such a way that: <ul><li>no three consecutive squares, horizontally or vertically, are the same colour <li>each row and column contains the same number of black and white squares.</ul> <p> Left-click in an empty square to turn it black, or right-click to turn it white. Click again in an already-filled square to cycle it between black and white and empty; middle-click to reset any square to empty.