grandmaitre n° 17 : Page 51 - Grille 38
L1C2 =8= L7C2 -8- L7C1 =8=9= L7C1 -9- L7C6 =9= L9C4 -9-1- L9C4 =1= L4C4 -1- ALS:L4C19 donc L1C9 ≠ 8