Die 144 Felder in dem Diagramm sind in 24 Gruppen von jeweils 6 Feldern
zerlegt werden, wobei alle Felder einer Gruppe verschieden beschriftet sein
müssen.
The 144 cells below must be divided into 24 groups of exactly six different
characters (A to F). There is only one possible solution for this problem, can
you find it?
Regeln