Sudoku Suprême n° 037 : Page 63 - Gr 60
L1C9 -9- L1C7 =9=6= L1C7 -6- L5C7 =6= L5C8 -6- L8C8 =6=2= L8C8 -2- L8C2 =2=8= L8C2 -8- L1C2 =8= L1C9 donc L1C9 ≠ 9