Maestro n° 103 : Page 86 - Gr 83
L3C1 =4= L3C4 -4- L8C4 =4=7= L8C4 -7- L8C9 =7=1= L8C9 -1- L9C8 =1= L2C8 -1-9- L2C8 =9= L1C8 -9-5- L1C8 =5= L7C8 -5- L8C7 =5= L8C1 donc L8C1 ≠ 4 et L3C1 ≠ 5