Jumbo Sudoku Challenge by Michael Mepham

Jumbo Sudoku Challenge

Michael Mepham

306 pages first pub 2006 (view editions)

challenging informative mysterious medium-paced
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Description

Following on the heels of Jumbo Sudoku Easy, Jumbo Sudoku Challenge includes 400 all-new puzzles to test sudoku enthusiasts. This collection contains some of the most difficult puzzles available and is sure to entice die-hard sudoku solvers. Jumbo...

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