Unolingo A challenging blend of crossword and sudoku that tests logic and deductive reasoning. Up & Down Words Use crossword-style clues to fill in two-word phrases. KenKen Similar to sudoku, but with the added challenge of boxed equations. Word Round Up A challenging blend of crossword and word find. Quick Cross A speedy crossword challenge. Give the new Sudoku a try by clicking the 'Play Free Online' button above! Play the number game that adds up to fun! Use simple logic to fill in the puzzle's nine rows and nine columns with numerals 1-9.
Sudoku Printable
Initially activate the 'Auto' option for converting single digit pencil marks into regular entries (only for initial setting, not changing the current mode).
Automatically check if the puzzle is correctly solved.
Sudoku games were introduced in Japan five years later, where the number puzzles became immensely popular and were officially coined 'sudoku.' In 2004, The Times in London published its first daily sudoku, reintroducing the Sudoku puzzle to Western culture. Sudoku quickly spread to newspapers all over the world, delighting users every single day.
Show numbers of digits yet to be filled.
Play Web Sudoku Puzzles
When highlighting all related cells, highlights follow your cursor movements. (Otherwise follow your clicks.)
Sudoku
Sudoku is a logic puzzle game. The objective is to fill the 9x9 Sudoku grid with digits 1 to 9 such that each of these 9 digits appears in each row, each column and each 3x3 sub-grid once any only once.
Play Sudoku Online
Don't want to solve the same Sudoku puzzles again and again? Now you no longer need to search the web for new puzzles. Billions of free Sudoku puzzles are offered here online. The chance that you play the same Sudoku puzzle is almost zero.
Sudoku Mobile
Play our billions of Sudoku puzzles on your mobile devices such as tablets and smartphones. If you have a large screen phone, try both versions to see which one is a better fit for your device. We also encourage those mouse-only PC players to try our Sudoku Mobile page that has a 'Cell First' option for entering multiple pencil marks in one cell at a time.
Sudoku Solver
Smart Solver
Sudoku Puzzles
Our new smart solver not only gives the solution for a puzzle, but also explains every step with demonstrations in the grid. You may learn Sudoku solving techniques through examples with numerous puzzles from our database. Try Smart Solver now.