The Colossal Book of Short Puzzles and Problems
by Martin Gardner,Dana Richards
ISBN 13: 9780393061147
Format: Illustrated (494 pages) Publisher: W. W. Norton & Company Published: 22 Nov 2005
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Absolutely Nasty Sudoku Level 4 (Absolutely Nasty® Series)
by Frank Longo
ISBN 13: 9781402743993
Format: spiral_bound Publisher: Puzzlewright
Papercraft Projects (Other Paper Crafts)
by Michael Grater
ISBN 13: 9780486255040
Format: Illustrated (128 pages) Publisher: Dover Publications Inc. Published: 01 Nov 1988
New York Post Extra Hot Su Doku: The Official Utterly Addictive Number-Placing Puzzle
by Wayne Gould
ISBN 13: 9780061373190
Format: Paperback (240 pages) Publisher: Collins Published: May 2007