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No-Frills Sudoku: Only 18 Clues Per Puzzle
NoFrills Sudoku Only 18 Clues Per Puzzle Author:Brainfreeze, Philip Riley, Laura Taalman Unlike many sudoku, where a third of the squares are filled in, each of these puzzles has only 18 givens (completed squares). That means fans enjoy more of a challenge. All the puzzles are expertly crafted to satisfy both casual solvers on a break and sudoku die-hards relaxing on a Sunday afternoon.