MysteryTwister - The Cipher Challenge Contest

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The Cipher Challenge Contest

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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

em99

Solved Level 1 challenge A modified homophonic cipher with reduced alphabets — Part 2

em99

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

em99

Solved Level 1 challenge Grille Cipher

Karl Schutt

Solved Level 2 challenge Assembly Point – Part 2

em99

Solved Level 1 challenge Factorization Cipher — Part 1

Snake

Solved Level 2 challenge The SZ42 Challenge — Part 3

Snake

Solved Level 2 challenge The SZ42 Challenge — Part 7

CryptoCowboy

Solved Level 1 challenge Number Sequence

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