Play unlimited Sudoku online from Easy to Evil. Compatible with all browsers, iPad and Android. Provider of Sudoku puzzles for newspapers and other Medium · Hard · Evil · Select a puzzle. Sudoku Multi - Solve the same puzzle against others simultaneously. Winner is first to complete the puzzle. Watch the pros solve puzzles - replay winning games. Sudoku is one of the most popular puzzle games of all time. The goal of Sudoku is to fill a 9×9 grid with numbers so that each row, column and 3×3 section.