Sample problems
Here are sample problems of Sudoku. You need Adobe Flash Player to enjoy these puzzles.
| Problem | Size | Level | Author | Solution |
|---|---|---|---|---|
 Sample problem 1 | 9x9 | Easy | mimic | |
Sample problem 2 | 9x9 | Easy | crimson | |
Sample problem 3 | 9x9 | Easy | OLAKE | |
Sample problem 4 | 9x9 | Easy | -4 | |
Sample problem 5 | 9x9 | Easy | SAKAMOTO, Nobuyuki | |
Sample problem 6 | 9x9 | Medium | country mushroom | |
Sample problem 7 | 9x9 | Medium | Komieda | |
Sample problem 8 | 9x9 | Medium | Yuichi Saito | |
Sample problem 9 | 9x9 | Hard | OX | |
Sample problem 10 | 9x9 | Hard | TAKEI Daisuke | |
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.
