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
Code: 069.4x4
ID: 06990000000
Chain Sudoku 5x5
Difficulty: Easy
Code: 069.5x5
ID: 06990000001
Chain Sudoku 6x6
Difficulty: Medium
Code: 069.6x6
ID: 06990000003
Chain Sudoku 7x7
Difficulty: Medium
Code: 069.7x7
ID: 06990000004
Chain Sudoku 8x8
Difficulty: Hard
Code: 069.8x8
ID: 06990000005
Chain Sudoku 9x9
Difficulty: Very hard
Code: 069.9x9
ID: 06990000006
More Sudoku puzzles each week
Enjoyed these puzzles? You can now continue to Play online where puzzles are updated each week and solutions are not visible in advance. In addition, all puzzles in Play online are saved on Conceptis servers so you can start a puzzle on one computer and continue on any other computer in the world.
