Magic Hexagon https://www.mathematische-basteleien.de/magichexagon.htm
The magic hexagon and its variants
He heard of the magic hexagon by a letter sent by Clifford
Meintest du seit?
The magic hexagon and its variants
He heard of the magic hexagon by a letter sent by Clifford
How to play Peg Solitaire
neu entdeckt, Niedernhausen/Ts. 2000 Torsten Sillke sent