Puzzle by Nikoli S Shikaku

"Shikaku" is one of Nikoli's own original puzzle, with simple rules and a unique feeling of solution. Until you get used to it, you'll tend to solve the puzzle with guesswork, but the real charm lies in solving them with logic. Once you master the method of solving the puzzle by gradually stretching squares from the numbers, you'll be able to enjoy "Shikaku" on an even deeper level.