CLS Codes and Ciphers Course
Frank Rubin
Part I - Fall 2017
Part II - Fall 2018


       CLS members are encouraged to submit cryptograms for other class members to solve. They may be any of the hobbyist types covered in the course, including route transposition, complete and incomplete columnar transposition, simple substitution, Vigenère, Playfair, FourSquare, bifid and trifid. Simple substitution cryptograms should be at least 75 letters, and all other types should be at least 100 letters long. Submit the original message (plaintext), the key, and the cryptogram together to contestcen@aol.com
       CLS members who solve these cryptograms will be listed here. Submit solutions to contestcen@aol.com

Useful Links:
≡   American Cryptogram Association
≡   Cryptologia (journal)
≡   Aegean Park Press

CLS Presentation:
≡   Open Office .ODP format
≡   Adobe .PDF format

Useful reference:
≡   Letter contact table
≡   Vowel/consonant contact table
≡   US Army Field Manual

Interactive encryption:
≡   Secure online encryption
≡   Vigenère encipherment

Cryptograms to solve:
≡   Mostly simple substitution
≡   Harder cryptograms
≡   Columnar transposition

How to solve:
≡   Columnar transposition


PUZZLES



Method: Simple substitution   Contributed by Frank Rubin
GAHDENA BE BRA WAG DHY DELAY OWL DUSRATY STEPHAN GAP SOFA.
Solved by:   Miriam Rubin, Doug Robertson, Jim Walsh


Method: Simple substitution   Contributed by Frank Rubin
KID PODKH KITS RUNG GLYPH NO SIR IRTYSH DE FRO?   SIR HITBDK PODKH.
Solved by:  


Method: Simple substitution   Contributed by Frank Rubin
SKIN MUSK D PACKABLE CONDOR FLAWN A USKCNONC FNDY DKC FNDOR SZNO PDKR D ZSWMPN SG GSOBSEENK WSON...
Solved by:  


The following intriguing decorative cryptogram was done in calligraphy by Mimi Koch.
Solved by:


Send email Send us an email to submit your answers, to ask for help, or to submit new cryptograms.


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