MysteryTwister - The Cipher Challenge Contest

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The Cipher Challenge Contest

378
Challenges

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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

Javantea

Solved Level 2 challenge Spanish Strip Cipher — Part 2

Dr. René Bäder

Solved Level 2 challenge Unconcealed RSA messages

Dr. René Bäder

Solved Level 2 challenge RSA Factoring Challenge: RSA-230

Dr. René Bäder

Solved Level 2 challenge RSA Factoring Challenge: RSA-210

Dr. René Bäder

Solved Level 2 challenge RSA Factoring Challenge: RSA-220

Dr. René Bäder

Solved Level 1 challenge Letter to the Templars — Part 1

Dr. René Bäder

Solved Level 1 challenge Polyhomophonic Substitution — Part 1

Dr. René Bäder

Solved Level 1 challenge Merkle-Hellman Knapsack Challenge - Part 1

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