Puzzlers League

From ciphers and codexes, to ancient encrypted rings and enigma machines, history is filled with clandestine communication methods and devices.

Join the Puzzlers League.

Solve puzzles. Win prizes. Learn about fascinating puzzles used throughout history.

Puzzlers League

Ottendorf Cipher

Presented by National Treasure Hunt, take a crack at solving this historic cipher for a chance to win exclusive prizes.

Get the Puzzle