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The Cipher Challenge Contest

378
Challenges
14,772
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
chinafish
chinafish

Solved Level 1 challenge Assembly Point – Part 1

chinafish
chinafish

Solved Level 2 challenge Assembly Point – Part 2

chinafish
chinafish
Martin Pescador
Martin Pescador

Solved Level 2 challenge The T52 Sturgeon Challenge — Part 9

Cryptoke
Cryptoke

Solved Level 1 challenge Number Sequence

Togoor2317
Togoor2317

Solved Level 1 challenge Number Sequence — Part 2

Togoor2317
Togoor2317

Solved Level 1 challenge Number Sequence

David Ruiz
David Ruiz
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