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The Cipher Challenge Contest

376
Challenges
14,577
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 1 challenge ADFGVX — Part 1

Michel Van Caneghem
Michel Van Caneghem

Solved Level 2 challenge Advent Challenge — Part 4

Emanuele
Emanuele

Solved Level 1 challenge Trifid Cipher

Emanuele
Emanuele

Solved Level 2 challenge Wheatstone Cryptograph — Part 2

amseels
amseels
Michel Van Caneghem
Michel Van Caneghem

Solved Level 2 challenge Advent Challenge — Part 3

Michel Van Caneghem
Michel Van Caneghem

Solved Level 2 challenge Advent-Challenge — Part 2

Michel Van Caneghem
Michel Van Caneghem

Solved Level 1 challenge Advent-Challenge — 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: