Maestro n° 100 : Page 84 - Gr 81
L1C6 -8- L1C1 =8= L2C2 -8-9- L2C2 =9= L9C2 -9-1- L9C2 =1= L4C2 -1-7- L4C2 =7= L4C5 -7- L5C6 =7= L1C6 donc L1C6 ≠ 8