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Mastermind 01: The Knowledge Vault
Big ideas, scholarly language and the architecture of knowledge.
14m Earn up to 60 Tokens
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A bright new puzzle
Mastermind 10: Language Labyrinth is a hard English-language crossword with 13 clues. Linguistics, word formation and the hidden machinery of language.
12 × 12 grid. Free guest play, with no download.
Use Help for a clue nudge and Check word to check your selected answer. Finish the crossword to challenge a friend on the same puzzle.

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Big ideas, scholarly language and the architecture of knowledge.
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Painters, sculptors and architects whose work defines eras and movements.
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A final-round blend of history, science, language, geography, arts and institutions.
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5 more keys to your next treasure chest.