Suprême n° 028 : Page 76 - Gr 73
L1C7 =7= L1C3 -7- L6C3 =7=6= L6C3 -6- L4C3 =6=4= L4C3 -4- L6C1 =4= L6C9 -4- L5C8 =4= L5C5 -4- L7C5 =4=9= L7C5 -9- L6C5 =9= L6C7 donc L6C7 ≠ 7 et L1C7 ≠ 9