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The Cipher Challenge Contest

378
Challenges
14,796
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 inducted into the Hall of Fame.
Challenges in four levels

Four degrees of difficulty, from pen & paper to complex mathematical problems

Recent solves
luigylemon
luigylemon

Solved Level 1 challenge The Syllabary Cipher – Part 1

luigylemon
luigylemon
luigylemon
luigylemon

Solved Level 1 challenge Alberti Challenge — Part 1

luigylemon
luigylemon

Solved Level 1 challenge Trifid Cipher

luigylemon
luigylemon

Solved Level 1 challenge Letter to the Templars — Part 2

luigylemon
luigylemon

Solved Level 1 challenge Letter to the Templars — Part 1

luigylemon
luigylemon
luigylemon
luigylemon

Solved Level 1 challenge Beaver Code

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