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The Cipher Challenge Contest

378
Challenges
14,812
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 Assembly Point – Part 1

luigylemon
luigylemon

Solved Level 1 challenge An Invisible Message

laizs
laizs

Solved Level 1 challenge Advent-Challenge — Part 1

Nico09
Nico09

Solved Level 1 challenge Number Sequence

Alierdem
Alierdem

Solved Level 1 challenge The Syllabary Cipher – Part 1

ANdri9 0qsjf 28wehds9uig jwe9udyxn
ANdri9 0qsjf 28wehds9uig jwe9udyxn

Solved Level 1 challenge The Syllabary Cipher – Part 1

Dr. René Bäder
Dr. René Bäder

Solved Level 1 challenge Wheatstone Cryptograph — Part 1

Dr. René Bäder
Dr. René Bäder
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