How to play Codebreaking

Rules

1. Follow the encoding rule described or suggested by the message.
2. Repeated letters, word lengths and any given mappings help you identify it.

How to answer

1. Type your decoded message. Use the Scratchpad for partial words or possible rules.
2. For a constant shift, open Try a shift and enter a value from 0 to 25. Use this decode copies the preview into your answer.
3. Choose Submit decoded message. Your answer and scratchpad are saved.

Solving tips

• Test a proposed rule on more than one word before decoding the whole message.

Practice

These examples do not change your daily progress or streak. Refresh the page to try them again.