Maestro n° 087 : Page 28 - Gr 25
L3C2 =1= L3C5 -1- L1C4 =1=6= L1C4 -6- L1C6 =6=5= L1C6 -5- L5C6 =5=9= L5C6 -9- L9C6 =9= L9C8 -9- L1C8 =9= L1C2 donc L1C2 ≠ 1 et L3C2 ≠ 9