Sudoku
Sudoku

Sudoku

Fill empty squares so each number appears exactly once in every row, column and box

  • The most popular logic puzzle in the world!
  • Fun, addictive and fascinating
  • Simple rules, very easy to learn
  • Requires no language or math skills
  • Wide range of logic and difficulty levels
  • Develops logical deduction and reasoning

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Classic Sudoku

Play new puzzles each week

Each puzzle consists of a 9x9 grid containing given clues in various places. The object is to fill all empty squares so that the numbers 1 to 9 appear exactly once in each row, column and 3x3 box.

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Classic Sudoku 9x9
Difficulty: Ultra easy
Classic Sudoku 9x9
Difficulty: Very easy
Classic Sudoku 9x9
Difficulty: Easy

Mini Sudoku

Play new puzzles each week

Each puzzle consists of a 4x4 or 6x6 grid containing given clues in various places. The object is to fill all empty squares so that the numbers 1 to 4 (for 4x4 puzzles) or 1 to 6 (for 6x6 puzzles) appear exactly once in each row, column and box.

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Mini Sudoku 4x4
Difficulty: Ultra easy
Mini Sudoku 6x6
Difficulty: Easy

Mega Sudoku

Play new puzzles each week

Each puzzle consists of a 12x12 or 16x16 grid containing given clues in various places. The object is to fill all empty squares so that the numbers 1 to 12 (for 12x12 puzzles) or 1 to 16 (for 16x16 puzzles) appear exactly once in each row, column and box.

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Mega Sudoku 12x12
Difficulty: Medium
Mega Sudoku 16x16
Difficulty: Medium

Irregular Sudoku

Play new puzzles each week

Each puzzle consists of a 6x6, 9x9 or 12x12 grid containing given clues in various places. The object is to fill all empty squares so that the numbers 1 to 6 (for 6x6 puzzles) or 1 to 9 (for 9x9 puzzles) or 1 to 12 (for 12x12 puzzles) appear exactly once in each row, column and irregular shaped box.

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Irregular Sudoku 6x6
Difficulty: Easy
Irregular Sudoku 9x9
Difficulty: Easy
Irregular Sudoku 12x12
Difficulty: Medium

Diagonal Sudoku

Play new puzzles each week

Each puzzle consists of a 9x9 grid containing given clues in various places. The object is to fill all empty squares so that the numbers 1 to 9 appear exactly once in each row, column, diagonal and 3x3 box. In the case of Diagonal Sudoku with Odd or Diagonal Sudoku with Even, the rules should comply with OddEven Sudoku as well.

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Diagonal Sudoku 9x9
Difficulty: Easy
Diagonal Sudoku 9x9.1.even
with OddEven
Difficulty: Medium
Diagonal Sudoku 9x9.1.odd
with OddEven
Difficulty: Medium

Multi Sudoku

Play new puzzles each week

Each puzzle consists of two or more Sudoku grids overlapping each other in various configurations. The grids may be Classic Sudoku or a mix of different Sudoku variants. The object is to solve all grids according to their variant rules. Note that overlapping areas comply with the rules of more than one grid.

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Multi Sudoku 2.01.4.odd
with Diagonal and OddEven
Difficulty: Medium
Multi Sudoku 3.05
Difficulty: Easy
Multi Sudoku 5.01
Difficulty: Easy

Sum Sudoku

Play new puzzles each week

Each puzzle consists of a 9x9 Sudoku grid containing areas surrounded by gray or dotted lines. The object is to fill all empty squares so that the numbers 1 to 9 appear exactly once in each row, column and 3x3 box, and the sum of the numbers in each area is equal to the clue in the area’s top-left corner. In addition, no number may be used in the same area more than once.

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Sum Sudoku 9x9
Difficulty: Easy
Sum Sudoku 9x9
Difficulty: Hard

OddEven Sudoku

Play new puzzles each week

Each puzzle consists of a 9x9 grid containing given clues in various places, and one or more of the given clues are located in gray squares. The object is to fill all empty squares so that the numbers 1 to 9 appear exactly once in each row, column and 3x3 box, and all gray squares contain either odd or even numbers according to the given clues.

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OddEven Sudoku 9x9.even
Difficulty: Easy
OddEven Sudoku 9x9.odd
Difficulty: Easy

Picture Sudoku

Play new puzzles each week

Each puzzle consists of a 9x9 grid containing given clues in various places. The object is to fill all empty squares so that the numbers 1 to 9 appear exactly once in each row, column and 3x3 box.

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Picture Sudoku 9x9.0
with Classic
Difficulty: Very easy
Picture Sudoku 9x9.0
with Classic
Difficulty: Easy
Picture Sudoku 9x9.0
with Classic
Difficulty: Medium

Chain Sudoku

Play new puzzles each week

Each puzzle consists of a group of circles arranged in a square grid and containing given clues in various places. The object is to fill all empty circles so that the numbers 1 to 4 (for 4x4 puzzles), 1 to 5 (for 5x5 puzzles) etc. appear exactly once in each row, column and chain.

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Chain Sudoku 4x4
Difficulty: Very easy
Chain Sudoku 5x5
Difficulty: Easy
Chain Sudoku 6x6
Difficulty: Easy