MysteryTwister - The Cipher Challenge Contest

Explore Challenges

About MysteryTwister

Community

Account

Contact | Legal Notice | Privacy

The Cipher Challenge Contest

376
Challenges

14,439
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 immortalized in the Hall of Fame.

Challenges in four levels

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

Kékesi Kristóf

Solved Level 1 challenge Bigram Substitution – Part 1 (Tutorial)

Kékesi Kristóf

Solved Level 1 challenge Number Sequence — Part 7

Kékesi Kristóf

Solved Level 1 challenge Pigpen with a twist — Part 1

jgamblin

Solved Level 3 challenge RSA with Special d

Lázár Tamás

Solved Level 1 challenge Number Sequence — Part 2

Kékesi Kristóf

Solved Level 1 challenge A modified homophonic cipher with reduced alphabets — Part 1

Varga Levente

Solved Level 1 challenge Enigma Messages

jgamblin

Solved Level 2 challenge Lunchtime Attack on the Fully Homomorphic Encryption Scheme

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