Maestro n° 085 : Page 51 - Gr 48
L3C2 =1= L9C2 -1-6- L9C2 =6= L8C3 -6-2- L8C3 =2= L7C3 -2- L7C7 =2= L5C7 -2-6- L5C7 =6= L3C7 donc L3C7 ≠ 1 et L3C2 ≠ 6