grandmaitre n° 17 : Page 31 - Grille 18
L4C9 =5= L4C3 -5-7- L4C3 =7= L9C3 -7-9- L9C3 =9= L9C6 -9- ALS:L7C5 et L8C46 -2- L1C5 =2=6= L1C5 -6- L1C8 =6= L3C7 -6- ALS:L6C37 =8= L6C9 donc L6C9 ≠ 5 et L4C9 ≠ 8