Nonograms
How to Play Nonograms
Nonograms, also known as Picross, Griddlers, Pic-a-Pix, are logic puzzles in which cells in a grid are colored or, left blank according to the numbers at the side of the grid to reveal a hidden pattern.
The numbers on the sides are clues to which grid cells need to be filled in. The number denotes the amount of connected cells which are filled in and in the cases where there is more than one number, it means that there are several groups of cells with one (or more) empty spaces between them.
Click once to color a square. Click again to mark X. Click 3rd time to clear that square.
More Info: Wiki, Credit: Domenico De Felice