MysteryTwister - The Cipher Challenge Contest

Explore Challenges

About MysteryTwister

Community

Account

Contact | Legal Notice | Privacy

The Cipher Challenge Contest

378
Challenges

14,796
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

UNDA

Solved Level 3 challenge RSA Factoring Challenge: RSA-250

UNDA

Solved Level 3 challenge RSA Factoring Challenge: RSA-240

UNDA

Solved Level 3 challenge RSA Factoring Challenge: RSA-232

UNDA

Solved Level 1 challenge Number Sequence — Part 8

UNDA

Solved Level 1 challenge Grille Cipher

Ron Stoner

Solved Level 2 challenge The SZ42 Challenge — Part 13

Ron Stoner

Solved Level 2 challenge The SZ42 Challenge — Part 12

UNDA

Solved Level 1 challenge Monoalphabetic Substitution

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