Sudoku Suprême n° 037 : Page 80 - Gr 77
L8C3 -7- L8C2 =7= L46C2 -7- L5C13 =7= L5C7 -7- L6C7 =7=4= L6C7 -4- L6C3 =4=6= L6C3 -6- L2C3 =6=7= L2C3 -7- L8C3 donc L8C3 ≠ 7