Maestro n° 102 : Page 84 - Gr 81
L2C6 -3- L1C4 =3=9= L1C4 -9- L1C6 =9= L8C6 -9-2- L8C6 =2= L5C6 -2-5- L5C6 =5= L2C6 donc L2C6 ≠ 3