Fiendish Sudoku Puzzle Book: 125 Very Hard and 125 Extremely Hard Sudoku puzzles. Total 250 Fiendish Puzzles. 2 puzzles per page, lots of rooms for extra markings. Solutions included. Book Discussion
Fiendish Sudoku Puzzle Book: 125 Very Hard and 125 Extremely Hard Sudoku puzzles. Total 250 Fiendish Puzzles. 2 puzzles per page, lots of rooms for extra markings. Solutions included. (Paperback)
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