MysteryTwister - The Cipher Challenge Contest

Explore Challenges

About MysteryTwister

Community

Account

Contact | Legal Notice | Privacy

The Cipher Challenge Contest

378
Challenges

14,805
Active members

You like riddles? Then this is your place!

MysteryTwister is a cipher contest, where you can solve cryptographic riddles (challenges) of different difficulty levels. If you are successful, you will be inducted into the Hall of Fame.

Challenges in four levels

Four degrees of difficulty, from pen & paper to complex mathematical problems

Ron Stoner

Solved Level 2 challenge Handycipher — Part 10

Ron Stoner

Solved Level 2 challenge Extended Handycipher — Part 3

Ron Stoner

Solved Level 2 challenge Extended Handycipher — Part 1

Ron Stoner

Solved Level 2 challenge Extended Handycipher — Part 2

Ron Stoner

Solved Level 2 challenge Handycipher — Part 2

Ron Stoner

Solved Level 2 challenge Handycipher — Part 1

Ron Stoner

Solved Level 3 challenge Extended Handycipher — Part 5

Patrick Foster

Solved Level 2 challenge Unusual encryption using a diophantine equation

Learn, Hack & Connect

Solve challenges and connect with other users on Discord

Challenges in four levels

Four degrees of difficulty, from pen & paper to complex mathematical problems

Enter the Hall of Fame

Master challenges in four levels and secure your spot in the Hall of Fame

Start exploring the challenges

Our 7 most solved challenges

Number Sequence
Level 1

Original Caesar Cipher
Level 1

Number Sequence — Part 2
Level 1

Caesar Encryption
Level 1

Beaver Code
Level 1

Number Sequence — Part 3
Level 1

Letter to the Templars — Part 1
Level 1