Maestro n° 087 : Page 53 - Gr 50
L1C5 =5= L9C5 -5- L9C1 =5= L7C1 -5-3- L7C1 =3= L7C3 -3-4- L7C3 =4= L8C2 -4- L5C2 =4=8= L5C2 -8- L4C1 =8=1= L4C1 -1- L4C9 =1= L5C9 -1-5- L5C9 =5= L5C8 -5- L1C8 =5=4= L1C8 donc L1C5 ≠ 4 et L1C8 ≠ 5