Maestro n° 103 : Page 84 - Gr 81
L1C2 =9= L1C6 -9-3- L1C6 =3= L1C9 -3-5- L1C9 =5= L6C9 -5- L6C3 =5=2= L6C3 -2- L6C1 =2= L2C1 donc L1C2 ≠ 2 et L2C1 ≠ 9