Maestro n° 102 : Page 57 - Gr 54
L4C1 =1= L3C1 -1-8- L3C1 =8= L1C1 -8- L1C9 =8=7= L1C9 -7- L1C6 =7= L2C5 -7-1- L2C5 =1= L2C3 -1-4- L2C3 =4= L9C3 -4- L9C1 =4=7= L9C1 -7- L8C2 =7= L4C2 donc L4C2 ≠ 1 et L4C1 ≠ 7