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| This category in other languages: | | | |
 | - Invitation to Mastermind
- Several interactive variants of the game, including strategies, tips, and math explanations.
http://www.cut-the-knot.com/ctk/Mastermind.shtml
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 | - Mastermind
- Provides rules.
http://www.centralconnector.com/GAMES/mastermind.html
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