Maestro n° 104 : Page 53 - Gr 50
L2C5 =8= L8C5 -8-5- L8C5 =5= L8C4 -5- L1C4 =5=7= L1C4 -7- L1C6 =7= L5C6 -7-3- L5C6 =3= L2C6 donc L2C5 ≠ 3 et L2C6 ≠ 8