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Our compilation of Free Online Sudoku Games available on the Internet. Play word games that teach, build or strengthen your word skills and concepts while having fun. We categorize and review the games listed here to help you find the games you are looking for.

We have added more Mini Sudoku for Kids, Sudoku Puzzles and Sudoku Variants.

Free Sudoku Puzzles Online | ||
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Mini Sudoku for Kids | Sudoku Puzzles | Sudoku Variants |

Play the puzzle game that is taking the world by storm. Sudoku is a logic-based placement puzzle. The object is to fill the grid so that every column, every row and every 3x3 box contains the digits 1 to 9.

Sudoku can also be played with 9 unique pictures or symbols. There are some examples of such games in the Sudoku for Kids section.

Read here for more information about Sudoku Rules.

You may also want to have a look at this video series of Sudoku Tips which will show you the different techniques that can be used to solve Sudoku Puzzles.

Sudoku 4x4

These 4x4 Sudoku for Kids are set to a general difficulty level suitable for kids ages 4 to 8 (PreK, Kindergarten, 1st, 2nd and 3rd grades).

Sudoku 6x6

These 6x6 Sudoku for Kids are suitable for kids ages 6 to 10 (1st, 2nd, 3rd and 4th grades). They are designed for kids who already encounter no difficulty in completing the 4x4 Sudoku puzzles.

Sudoku Letters 4x4

These 4x4 Sudoku for Kids with letters are suitable for kids ages 4 to 8 (PreK, Kindergarten, 1st, 2nd, and 3rd grades).

Sudoku Letters 6x6

These 6x6 Sudoku for Kids with letters are perfect for kids ages 6 to 10 (1st, 2nd, 3rd and 4th grades) when the 4x4 puzzles are no longer a challenge.

Sudoku

A puzzle that has taken the world by storm; fill the grid with the digits 1-9 such that no number is repeated in any column, row, or boxed section. Updates daily. Many levels - from 2x2 trivial to 9 jigsaw advanced.

Sudoku Math Puzzle

Sudoku is a fun logic puzzle! The goal is to fill a 9 × 9 grid so that each column, each row, and each of the nine 3 × 3 subgrids contain all of the digits from 1 to 9.

Sudoku 16x16

The goal is to fill the grid, so that each row, each column and each region of 4x4 cells contain all the numbers from 1 to 9 and the letters from A to G. It is also called Super Sudoku or hexadecimal Sudoku.

Sushi Sudoku

This is the classic Sudoku game with a nice sushi twist! Each row, column and tinted square set must have one and only one of each number, character or sushi piece. You can choose between practice, quick play and full course. Select either numbers, Chinese characters or sushi. Have fun!

Killer Sudoku

The goal is to fill the grid, so that each row, each column and each region of 3x3 boxes contains all the numbers from 1 to 9. The number at the top of the first box of each dotted region corresponds to the sum of the digits of the boxes of that region. For example a region of two cases with the number 5 can be broken down into 1+4 or 2+3.

Wordoku

The goal is to fill the grid, so that each row, each column and each region of 3x3 cells contains all the letters defined for the game. Letters Sudoku is also called Wordoku , Godoku or Sudoku Word.

Sushi Sudoku

This is the classic Sudoku game with a nice sushi twist! Each row, column and tinted square set must have one and only one of each number, character or sushi piece. You can choose between practice, quick play and full course. Select either numbers, Chinese characters or sushi. Have fun!

Diagonal Sudoku

In contrast to classic Sudoku puzzles, the two diagonals of an X-Sudoku contain all numbers, too. Other names for this variation are Diagonal Sudoku, Diagonal Number Place, taikakusen nanpure, Sudoku X, Kokonotsu, or Dell’s Number Place Challenger.

Even-Odd Sudoku are Sudoku puzzles with colored even (or odd) cells. Sometimes this variante is called Even-Odd Number Place, Odd/Even Sudoku oder Guusuu Kisuu Nanpure.

Samurai Sudoku

Samurai Sudoku puzzles consist of five overlapping Sudoku grids. The standard Sudoku rules apply to each 9 x 9 grid. Place digits from 1 to 9 in each empty cell. Every row, every column, and every 3 x 3 box should contain one of each digit.

Hyper Sudoku

A Hyper Sudoku is solved by filling the numbers from 1 to 9 into the blank cells, but it has, unlike classic Sudoku. 13 regions (four regions overlap with the nine standard regions). In all regions, the numbers from 1 to 9 can appear only once.

Twin Sudoku

Twin Sudoku consists of a pair of linked standard Sudoku puzzles each with some starting digits. To get a complete solution for the twin puzzles, we have to solve each twin puzzle with the usual strategies but we can only get the complete solution for the twin puzzles by substituting the equivalent values of the digits from one twin Sudoku into the other.

Kakuro

Flex your numerical might with this daily mathematical puzzle, called Kakuro. Though the addition may be simple, the solution is anything but! Find combinations of the numbers 1 through 9 that add up to their corresponding clues. No digits can be repeated in any uninterrupted column or row. New puzzles everyday to sharpen your mind add up to endless entrancing fun!

Futoshiki

A new Sudoku and Futoshiki puzzle every day in one convenient location. Monday-to-Friday has normal difficulty puzzles while Saturday and Sunday have the weekend workout versions, much tougher puzzles to really stretch your brain.

Try the free Mathway calculator and
problem solver below to practice various math topics. Try the given examples, or type in your own
problem and check your answer with the step-by-step explanations.

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