Maestro n° 094 : Page 81 - Gr 78
L1C1 -1- L1C7 =1=3= L1C7 -3- L1C8 =3= L4C8 -3-4- L4C8 =4= L8C8 -4- L8C5 =4=1= L8C5 -1- L8C2 =1= L2C2 -1- L1C1 donc L1C1 ≠ 1