Maestro n° 103 : Page 41 - Gr 38
L6C3 =6=8= L6C3 -8- L6C1 =8= L7C1 -8-1- L7C1 =1= L8C3 -1- L8C8 =1=3= L8C8 -3- L2C8 =3=9= L2C8 -9- L2C2 =9= L1C2 -9-8- L1C2 =8= L1C3 donc L1C3 ≠ 6 et L6C3 ≠ 8