Maestro n° 086 : Page 80 - Gr 77
L5C4 =3=5= L5C4 -5- L5C1 =5= L4C3 -5-2- L4C3 =2= L1C3 -2-7- L1C3 =7= L1C5 -7- L5C5 =7= L5C6 -7-3- L5C6 =3= L7C6 donc L5C6 et L7C4 ≠ 3