grandmaitre n° 17 : Page 51 - Grille 38
L3C9 =3= L1C9 -3- L1C2 =3= L7C2 -3- ALS:L9C134 -1- ALS:L4C468 -8- L4C9 =8= L3C9 donc L3C9 ≠ 6