Grille téléchargée depuis www.123sudoku.net
L'utilisation d'une police à taille fixe est recommandé.
Niveau : difficile
/----+----+----+----+----+----+----+----+----\ 
|  xx|    |    |    |    |  xx|  xx|    |    |
|xx  | 5  | 3  |23  |21  |xx  |xx  |10  |11  |
|----+----+----+----+----+----+----+----+----|
|  10|    |    |    |    |  xx|   3|    |    |
|    |    |    |    |    |xx  |    |    |    |
|----+----+----+----+----+----+----+----+----|
|  12|    |    |    |    |    |   4|    |    |
|    |    |    |    |    |21  |22  |    |    |
|----+----+----+----+----+----+----+----+----|
|  xx|  xx|  23|    |    |    |    |    |    |
|xx  |xx  |    |    |    |    |    |    |    |
|----+----+----+----+----+----+----+----+----|
|  xx|    |  21|    |    |    |    |    |    |
|xx  |11  |10  |    |    |    |    |    |    |
|----+----+----+----+----+----+----+----+----|
|  21|    |    |    |    |    |    |  xx|  xx|
|    |    |    |    |    |    |    |xx  |xx  |
|----+----+----+----+----+----+----+----+----|
|  22|    |    |    |    |    |    |    |    |
|    |    |    |    |    |    |    | 6  | 3  |
|----+----+----+----+----+----+----+----+----|
|   5|    |    |  xx|  10|    |    |    |    |
|    |    |    |xx  |    |    |    |    |    |
|----+----+----+----+----+----+----+----+----|
|   3|    |    |  xx|  12|    |    |    |    |
|    |    |    |xx  |    |    |    |    |    |
\----+----+----+----+----+----+----+----+----/