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Mastermind 14: Numbers & Logic
Mathematical ideas, famous names and structures that reward precise thinking.
14m Earn up to 60 Tokens
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A bright new puzzle
Mastermind 15: Grand Master Mix is a hard English-language crossword with 12 clues. A final-round blend of history, science, language, geography, arts and institutions.
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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Mathematical ideas, famous names and structures that reward precise thinking.
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Civilizations, dynasties and powers that shaped the ancient and medieval world.
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Linguistics, word formation and the hidden machinery of language.
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5 more keys to your next treasure chest.