SquarO® is a logic puzzle with very simple rules, but you will need to make your brain work to solve the grids. So if you like sudoku or kakuro you will definitely like Squaro® as well !
On this website, everything is FREE : you can play as many grids as you want and even compete in tournaments.
Here are the rules of the games :
For evil SquarO, the number can be between 0 and 8 which corresponds to the number of half-circles around that square that must be filled. Enjoy !