Maestro n° 097 : Page 86 - Gr 83
L7C8 -5- L7C6 =5= L8C5 -5-8- L8C5 =8= L1C5 -8-3- L1C5 =3= L1C4 -3-7- L1C4 =7= L1C1 -7-9- L1C1 =9= L7C1 -9-3- L7C1 =3= L7C8 donc L7C8 ≠ 5