The Crypto Challenge Contest
Four degrees of difficulty, from pen & paper to complex mathematical problems
Solved Level 2 challenge Letter to the Templars — Part 3
Solved Level 1 challenge Image Noise
Solved Level 1 challenge Number Sequence
Solved Level 1 challenge Beaver Code
Solved Level 1 challenge Number Sequence
Solved Level 1 challenge Beaver Code
Solved Level 1 challenge Original Caesar Cipher
Solved Level 1 challenge Number Sequence
Four degrees of difficulty, from pen & paper to complex mathematical problems