Maestro n° 099 : Page 49 - Gr 46
L1C1 =8=4= L1C1 -4- L3C2 =4= L5C2 -4-5- L5C2 =5= L5C3 -5- L3C3 =5=4= L3C3 -4- L3C7 =4= L1C9 donc L1C1 ≠ 4 et L1C9 ≠ 8