Sudoku
Sharpen your logic and pattern recognition with these Sudoku platforms.
FREE
Web Sudoku
Classic online Sudoku with 4 difficulty levels. Simple, clean, and addictive.
FREE
Sudoku.com
Beautiful interface with daily puzzles, hints, and statistics tracking.
FREE
NY Times Sudoku
Daily Sudoku from the New York Times — Easy, Medium, and Hard puzzles.
FREE
Sudoku Kingdom
Print-friendly Sudoku puzzles with unique solutions. Great for offline practice.
FREE
Sudoku 9x9
Thousands of graded puzzles with step-by-step solving techniques explained.
FREE
Killer Sudoku Online
A challenging variant combining Sudoku with math — cages with sum constraints.