Maestro n° 100 : Page 86 - Gr 83
L4C4 =6= L4C2 -6- L6C1 =6= L8C1 -6-9- L8C1 =9= L5C1 -9-8- L5C1 =8= L5C6 -8-3- L5C6 =3= L5C7 -3-4- L5C7 =4= L6C7 -4-1- L6C7 =1= L6C4 donc L4C4 ≠ 1 et L6C4 ≠ 6