The "checkerboard cipher": a guest blog
June 19, 2007
Today's blog is actually a "guest blog." It is about the "straddling checkerboard" code that appears in the season's last episode The Janus List, and is written by Shannon Bohle. Here it is.
A straddling checkerboard cipher or code is constructed using 10 columns and four rows. Along the top row must be the numbers 0 through 9... continued »