Maestro n° 103 : Page 81 - Gr 78
L2C2 =2= L2C8 -2- L3C9 =2=6= L3C9 -6- L2C7 =6= L2C5 -6-7- L2C5 =7= L5C5 -7-2- L5C5 =2= L4C6 -2-6- L4C6 =6= L6C6 -6-1- L6C6 =1= L6C9 -1-9- L6C9 =9= L6C1 -9- L9C1 =9= L9C2 donc L9C2 ≠ 2 et L2C2 ≠ 9