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The Cipher Challenge Contest

377
Challenges
14,666
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
Zack P
Zack P

Solved Level 1 challenge Assembly Point – Part 1

Tomas Pavlovic
Tomas Pavlovic

Solved Level 1 challenge Assembly Point – Part 1

E.T
E.T

Solved Level 1 challenge Assembly Point – Part 1

Silvia Kortmann
Silvia Kortmann

Solved Level 1 challenge Assembly Point – Part 1

Luigi Tomelli
Luigi Tomelli

Solved Level 1 challenge Assembly Point – Part 1

Zack P
Zack P

Solved Level 1 challenge A disguised code

E42314056
E42314056

Solved Level 2 challenge Cracking SHA1-Hashed Passwords

E42314056
E42314056

Solved Level 1 challenge ADFGVX — Part 1

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: