Sudoku Suprême n° 037 : Page 84 - Gr 81
L4C4 =8=3= L4C4 -3- L1C4 =3= L1C6 -3-7- L1C6 =7= L1C9 -7- L6C9 =7= L6C8 -7-8- L6C8 =8= L6C12 donc L4C2 ≠ 8