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The Cipher Challenge Contest

378
Challenges
14,826
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 New Year's Greetings — Part 3

Apoorv
Apoorv

Solved Level 1 challenge Playfair with hints about the grid

Apoorv
Apoorv

Solved Level 1 challenge Pigpen with a twist — Part 1

Apoorv
Apoorv

Solved Level 1 challenge Double Columnar Transposition

luigylemon
luigylemon

Solved Level 1 challenge New Year's Greetings — Part 2

luigylemon
luigylemon

Solved Level 1 challenge Molehunt (Part 2/3)

Apoorv
Apoorv

Solved Level 1 challenge Number Sequence — Part 3

luigylemon
luigylemon

Solved Level 1 challenge Molehunt (Part 1/3)

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