Maestro n° 100 : Page 63 - Gr 60
L4C5 =6=9= L4C5 -9- L9C5 =9=3= L9C5 -3- L1C5 =3= L1C4 -3-4- L1C4 =4= L6C4 -4-1- L6C4 =1= L6C9 -1- L5C7 =1= L8C7 -1-9- L8C7 =9= L7C7 -9- L7C6 =9= L4C6 donc L4C6 ≠ 6 et L4C5 ≠ 9