The Cipher Challenge Contest
Four degrees of difficulty, from pen & paper to complex mathematical problems
Solved Level 2 challenge Akelarre Part 1
Solved Level 2 challenge The Fialka Challenge – Part 3
Solved Level 2 challenge The Fialka Challenge – Part 2
Solved Level 1 challenge Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 1
Solved Level 1 challenge From Russia with Love
Solved Level 3 challenge The Heavy T52 Sturgeon Challenge — Part 2
Solved Level 1 challenge A disguised code
Solved Level 1 challenge Nils away on travel
Four degrees of difficulty, from pen & paper to complex mathematical problems