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May 1, 2013

Circular Sudoku is now available in Paper back! Hundreds of puzzles just waiting for you to solve. Head over to Amazon (or any other bookstore of your choice - if they don't have the book, ask them why!) and get your hands on the real thing by clicking here.

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Professor Higgins speaking in Turin at the Premio Peano Award

May 1, 2013

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© 2014 by Professor Peter Higgins.