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.

See Sudoku rules

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.

See Sudoku rules

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.

See Sudoku rules

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.

See Sudoku rules

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.

See Sudoku rules

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

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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.

See Sudoku rules

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.

See Sudoku rules

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.

See Sudoku rules

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.

See Sudoku rules

Chain Sudoku 4x4

Difficulty: Very easy

Chain Sudoku 5x5

Difficulty: Easy

Chain Sudoku 6x6

Difficulty: Easy