Sudoku Suprême n° 037 : Page 63 - Gr 60
L6C7 -3- L6C5 =3= L4C5 -3-5- L4C5 =5= L4C8 -5-8- L4C8 =8= L6C8 -8-2- L6C8 =2= L6C7 donc L6C7 ≠ 3