Sample problems
Here are sample problems of Sudoku. You need Adobe Flash Player to enjoy these Sudoku puzzles.
| Problem | Size | Level | Author | Solution |
|---|---|---|---|---|
 Sample problem 1 | 9x9 | Easy | Aiko | |
Sample problem 2 | 9x9 | Easy | -4 | |
Sample problem 3 | 9x9 | Easy | T.Karino | |
Sample problem 4 | 9x9 | Easy | Hone Rokuo | |
Sample problem 5 | 9x9 | Easy | aquablue | |
Sample problem 6 | 9x9 | Easy | Hone Rokuo | |
Sample problem 7 | 9x9 | Easy | -4 | |
Sample problem 8 | 9x9 | Easy | POTS | |
Sample problem 9 | 9x9 | Easy | Yuichi Saito | |
Sample problem 10 | 9x9 | Medium | Yuichi Saito | |
Sample problem 11 | 9x9 | Medium | cubic function | |
Sample problem 12 | 9x9 | Medium | Casty | |
Sample problem 13 | 9x9 | Medium | Momotereu | |
Sample problem 14 | 9x9 | Medium | Komieda | |
Sample problem 15 | 9x9 | Medium | Ryohei Nakai | |
Sample problem 16 | 9x9 | Medium | aquablue | |
Sample problem 17 | 9x9 | Medium | akasyo | |
Sample problem 18 | 9x9 | Hard | SAKAMOTO, Nobuyuki | |
Sample problem 19 | 9x9 | Hard | Casty | |
Sample problem 20 | 9x9 | Hard | -4 | |
Members of nikoli.com can enjoy new puzzles everyday at your own exclusive page. For the details, please check the "About nikoli.com" page.
We are sometimes publishing free puzzle problems at the members area.
Sudoku books
If you would like to enjoy Sudoku puzzles on paper, You can buy Sudoku books at the Purchase Nikoli Books page at the Nikoli official site.
