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The Crypto Challenge Contest

370
Challenges
13,214
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

Recent solves
Murtaza
Murtaza

Solved Level 1 challenge Number Sequence

Klaus
Klaus

Solved Level 2 challenge Enigma Part 1

Caffra
Caffra

Solved Level 1 challenge Number Sequence

Philip DeWald
Philip DeWald

Solved Level 1 challenge Number Sequence

Szabó Zoltán
Szabó Zoltán

Solved Level 2 challenge Homophonic Encryption — Part 4

Kevin Stocker
Kevin Stocker

Solved Level 1 challenge A disguised code

20210041
20210041

Solved Level 1 challenge A disguised code

Hyperion
Hyperion

Solved Level 1 challenge Original Caesar Cipher

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:
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