Peter Ritmeester is the inventor of the Hyper Sudoku, where four gray regions also contain 1-9. Almost all puzzlers familiar with the Hyper prefer it to standard sudoku: the four gray regions provide for some nice extra logic and the information you are looking for is hidden in four more regions. For more than a decade Ritmeester has published these Hypers in The International New York Times and many other newspapers worldwide. Books of his sudoku puzzles — 200+ presented by Will Shortz — have been on the bestseller lists in the US for more than ten years.
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Vendeur : Revaluation Books, Exeter, Royaume-Uni
Paperback. Etat : Brand New. 128 pages. 7.00x5.00x0.32 inches. In Stock. N° de réf. du vendeur zk1076111416
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