Sudoku Suprême n° 039 : Page 21 - Gr 18
L4C9 -8- L6C8 =8=6= L6C8 -6- L5C7 =6=7= L5C7 -7- L6C9 =7= L8C9 -7-2- L8C9 =2= L4C9 donc L4C9 ≠ 8