Maestro n° 085 : Page 44 - Gr 41
L3C9 =2=4= L3C9 -4- L3C8 =4= L9C8 -4- L9C5 =4= L1C5 -4-1- L1C5 =1= L1C4 -1- L4C4 =1=2= L4C4 -2- L6C6 =2= L6C8 donc L13C8 ≠ 2