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The Cipher Challenge Contest

376
Challenges
14,637
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
Emanuele
Emanuele

Solved Level 2 challenge Double Column Transposition — Part 5

Michel Van Caneghem
Michel Van Caneghem
Riemann
Riemann

Solved Level 1 challenge ADFGVX — Part 1

Boris
Boris

Solved Level 1 challenge ADFGVX — Part 1

Michel Van Caneghem
Michel Van Caneghem
Michel Van Caneghem
Michel Van Caneghem
Error
Error

Solved Level 2 challenge Cracking SHA1-Hashed Passwords

StarsWolf
StarsWolf

Solved Level 2 challenge Cracking SHA1-Hashed Passwords

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: