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The Cipher Challenge Contest

376
Challenges
14,423
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
Cogite
Cogite

Solved Level 1 challenge How do you become a big cryptographer?

Koji
Koji

Solved Level 1 challenge Advent-Challenge — Part 1

Jinx
Jinx

Solved Level 2 challenge Alice's Birthday Party (Part 2)

Jinx
Jinx

Solved Level 2 challenge Alice's Birthday Party (Part 1)

Koji
Koji

Solved Level 1 challenge Letter to the Templars — Part 2

Koji
Koji

Solved Level 1 challenge The Syllabary Cipher – Part 1

klinsten
klinsten

Solved Level 2 challenge The Syllabary Cipher – Part 2

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: