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Absolutely Nasty® Sudoku Level 4
Language: en
Pages: 164
Authors: Frank Longo
Categories: Games & Activities
Type: BOOK - Published: 2007 - Publisher: Sterling Publishing Company

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Top solvers can try their hand at the One-Sided Gordonian Rectangle; Extended Gordonian Rectangle; Gordonian Polygon; and Alternating Digits. (But they can take
Absolutely Nasty® Sudoku Level 2
Language: en
Pages: 164
Authors: Frank Longo
Categories: Games & Activities
Type: BOOK - Published: 2007 - Publisher: Sterling Publishing Company

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Even more interaction--this time used in combination with other procedures...and a lot more heavily than in the first book.
Mensa Absolutely Nasty Sudoku Level 1
Language: en
Pages: 164
Authors: Frank Longo
Categories: Games & Activities
Type: BOOK - Published: 2007 - Publisher: Sterling Publishing Company

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The vast majority of sudoku puzzles that are labeled hard, expert, challenger, are not really all that difficult. And in a surprising number of cases, they are
Nastiest Sudoku Book Ever
Language: en
Pages: 0
Authors: F. Longo
Categories: Games & Activities
Type: BOOK - Published: 2012-04 - Publisher: Puzzlewright

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Only diehards need apply These incredibly difficult sudoku are made to challenge even the most expert solver...and strain their brains to bursting. Each puzzle
Beyond Black Belt Sudoku
Language: en
Pages: 0
Authors: Frank Longo
Categories: Games & Activities
Type: BOOK - Published: 2011-09 - Publisher: Puzzlewright

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"If you have to ask, IT'S TOO HARD FOR YOU"--Cover.