Sudoku Suprême n° 039 : Page 52 - Gr 49
L1C8 -8- L1C7 =8= L9C7 -8-1- L9C7 =1= L6C7 -1- L6C2 =1= L5C1 -1-7- L5C1 =7= L1C1 -7-2- L1C1 =2= L1C8 donc L1C8 ≠ 8