Sudoku Suprême n° 037 : Page 66 - Gr 63

L’Approche du tigre (Grouped Discontinuous Nice Loop)

L7C9 -1- L7C1 =1= L9C1 -1-9- L9C1 =9= L9C4 -9- L4C4 =9= L4C8 -9-7- L4C8 =7= L6C89 -7- L6C2 =7=5= L6C2 -5- L2C2 =5=8= L2C2 -8- L7C2 =8= L7C9 donc L7C9 ≠ 1