Maestro n° 094 : Page 75 - Gr 72
L5C6 =4= L5C2 -4-3- L5C2 =3= L5C3 -3- L2C3 =3= L2C1 -3-4- L2C1 =4= L6C1 -4- L6C6 =4=9= L6C6 donc L6C6 ≠ 4 et L5C6 ≠ 9