Maestro n° 103 : Page 31 - Gr 28
L8C8 =3= L8C6 -3-4- L8C6 =4= L8C4 -4- L2C4 =4=8= L2C4 -8- L2C3 =8= L3C3 -8-1- L3C3 =1= L3C2 -1- L9C2 =1= L9C8 donc L8C8 ≠ 1 et L9C8 ≠ 3