Sudoku not challenging enough? Tease your brain with Jigoku, a Sudoku variant where notches in the cell borders, known as jigs, show the greater-than / less-than relationships between cells. This app is inspired by the incredibly fun and tough puzzles available at https://krazydad.com/jigoku. Generate Unlimited Games • The puzzle generation system will let you create as many puzzles as you want. • Support for both Sudoku and Jigoku games, 2x2 and 3x3 games, and varying levels of difficulty. • Each game has a unique solution. Enter Guesses and Highlights • The user interface was designed to be simple to use and easy to learn. • You can highlight guesses and placed values, enter guesses quickly with a tap or slide of the finger, and enter final values with a long press. • Duplicates and guesses that conflict with final value selections are highlighted. Animated Tutorials • Available on most screens will be a "?" icon you can use to view the rules of Jigoku and how the interface works. Multiple Active Games • Have as many concurrent games saved as you'd like and delete them whenever. Colors! • Switch to a Midnight theme, or one of several base color themes. Enjoy!