The Cipher Challenge Contest
Four degrees of difficulty, from pen & paper to complex mathematical problems
Solved Level 2 challenge The SZ42 Challenge — Part 12
Solved Level 1 challenge Weakened Granit — Part 1
Solved Level 3 challenge Handycipher — Part 9
Solved Level 3 challenge Handycipher — Part 8
Solved Level 3 challenge Handycipher — Part 5
Solved Level 2 challenge The Hutton Cipher – Part 1
Solved Level 1 challenge Assembly Point – Part 1
Solved Level 2 challenge Holographic Encryption — Part 1
Four degrees of difficulty, from pen & paper to complex mathematical problems