0 6 0 0 9 0 0 0 1
7 0 1 0 0 8 0 0 5
0 0 0 0 0 0 0 8 0
0 0 9 2 0 0 0 3 0
0 0 0 0 0 4 0 0 0
0 0 0 0 8 0 2 0 7
0 0 0 4 0 0 0 7 0
9 0 0 5 7 0 8 0 6
2 0 0 0 3 0 0 9 0
 
extrait d'un magazine de Sudoku, niveau6-7