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    • Alphametic Puzzles Open site in a new window - A large collection of these puzzles involving addition.
    • Alphametics Page Open site in a new window - Dedicated to that most elegant of puzzles combining mathematical and word play.
    • Cryptarithms Online Open site in a new window - Brain-teasers for your entertainment, a Primer on Cryptarithmetic, books, and links to the best collections of alphametics on the Web.
    		 



     
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