Sudoku originated from the Latin square matrix studied by Swiss mathematician Euler and others in the early 18th century. In China, first-year students began to learn Sudoku, using "unique method" and "exclusion method" to solve Sudoku puzzles and train logic thinking ability.

Cat King Sudoku provides Sudoku with a variety of levels of difficulty, from 4th, 6th, 8th to 9th, from beginner, easy to expert and master, suitable for students and Sudoku lovers of different ages.

FEATURES:
- 4x4, 6x6, 8x8, 9x9, a variety of classic Sudoku gameplay
- three game modes
- six different difficulties
- unlimited levels in random mode
- hundreds of puzzles to explore in levels mode
- daily challenge mode, train your brain every day
- hint system for beginners
- pencil marks feature for solving hard puzzles
- auto-note feature
- auto-save your progress for each puzzle
- pause anytime, resume anytime
- phones and tablets support
- leaderboard feature
- daily login rewards