Maestro n° 104 : Page 83 - Gr 80
L6C5 -2- L7C5 =2= L7C9 -2- L5C9 =2=6= L5C9 -6- L5C3 =6= L6C3 -6-7- L6C3 =7= L6C8 -7-8- L6C8 =8= L6C5 donc L6C5 ≠ 2