January 28, 2026
Description
Fleissner grille (Fleißner-Schablone) I'm using teaching my 5th grade students about cryptography.
The dimesions are: 60×60×1 mm.
Great Fleissner grille generator: https://projects.404-net.de/fleissner/
License:
Creative Commons — Attribution — Noncommercial — Share Alike