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Mastermind

Crack a four-number code in free online Mastermind. Use exact and elsewhere feedback to refine each guess, with touch controls and local personal records.

Interactive play requires JavaScript. You can read the rules below.

How to play Mastermind

  1. Choose four numbers and submit your guess. Numbers can repeat.
  2. Exact feedback counts numbers in the correct position; elsewhere counts correct numbers in another position.
  3. Use the feedback to refine your next guess and crack the code within eight attempts.