MysteryTwister - The Cipher Challenge Contest

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The Cipher Challenge Contest

380
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

reggina

Solved Level 1 challenge Original Caesar Cipher

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Bogdann

Solved Level 2 challenge M-138 — Part 3

DimKrie

Solved Level 2 challenge Cracking SHA1-Hashed Passwords

Anna-Maria

Solved Level 2 challenge Cracking SHA1-Hashed Passwords

msfavvas

Solved Level 2 challenge AES key — encoded in the machine readable zone of a European ePassport

Loukia

Solved Level 1 challenge From Russia with Love

Loukia

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

Loukia

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