60651
Published: 6th April, 2013
Last edited: 6th April, 2013
Created: 5th April, 2013
This is a variation on the Monoalphabetic Substitution cypher, and is based on a 3x3 grid pattern. If you type out the alphabet in rows of three, the pattern becomes easy to see. Called COS-9 because the name uses a symbol from each grid.(First attempt at a font.)