Maestro n° 101 : Page 64 - Gr 61
L5C1 =1= L7C1 -1-3- L7C1 =3= L7C8 -3- L6C8 =3=8= L6C8 -8- L2C8 =8= L2C7 -8- L8C7 =8=6= L8C7 -6- L8C2 =6= L5C2 donc L5C2 ≠ 1 et L5C1 ≠ 6