ref: 819277148315fd5b5cc987e4b4e440e5b2bd2dad
dir: /html/mosaic.html/
Mosaic <p> Colour every square either black or white. Each number indicates how many black squares are in the 3×3 square surrounding the number – <em>including</em> the clue square itself. <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. You can left- or right-drag to set multiple squares at once.