Every day get the featured Sudoku puzzle at your chosen difficulty, complete it and submit your time to see how you compare with 30,000 other players worldwide who are already enjoying this daily challenge. Can you top the leaderboards? Sudoku of the Day includes for Free: * 6 competitive puzzles each day ranging from Beginner difficulty through to Diabolical * Unlimited randomly generated puzzles * Enter your own puzzle to solve in the game * Manual or automatic pencil marks * Smart hints - t