Maestro n° 094 : Page 87 - Gr 84
L1C2 =2= L1C6 -2- L5C6 =2= L5C7 -2- L2C7 =2=4= L2C7 -4- L2C1 =4=8= L2C1 -8- L2C9 =8= L1C9 -8-6- L1C9 =6= L9C9 -6-3- L9C9 =3= L9C2 donc L9C2 ≠ 2 et L1C2 ≠ 3