grandmaitre n° 17 : Page 60 - Grille 47
L6C3 -6- ALS:L679C4 -8- L8C5 =8= L8C7 -8-7- L8C7 =7= L5C7 -7- L6C9 =7= L6C3 donc L6C3 ≠ 6