The Cipher Challenge Contest
Four degrees of difficulty, from pen & paper to complex mathematical problems
Solved Level 1 challenge Letter to the Templars — Part 1
Solved Level 1 challenge A hidden word
Solved Level 1 challenge Beaver Code
Solved Level 1 challenge Number Sequence — Part 6
Solved Level 2 challenge Spirale — Part 3
Solved Level 2 challenge Twisting the Rubik's Cube
Solved Level 1 challenge Number Sequence — Part 8
Solved Level 3 challenge Extended Handycipher — Part 5
Four degrees of difficulty, from pen & paper to complex mathematical problems