Sudoku Suprême n° 037 : Page 51 - Gr 48
L9C6 -4- L9C7 =4= L5C7 -4- L6C9 =4=1= L6C9 -1- L56C8 =1= L1C8 -1-6- L1C8 =6= L2C89 -6- L2C6 =6=4= L2C6 -4- L9C6 donc L9C6 ≠ 4