Printable Evil 9×9 Sudoku (4 per page)

Print free evil 9×9 sudoku — the hardest level we make, a pure-logic gauntlet with the bare minimum of clues. Evil grids demand the full toolbox of advanced techniques and real persistence, but they never need a guess: there's exactly one answer to earn. Print it instantly or save the PDF for a serious sitting, or play evil Sudoku online if you'd rather solve on screen.

Sudoku247 Print
9×9 · 4 / pageEvil
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#48138
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#81832
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#83017
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#51402
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About this Evil 9×9 sheet

Evil sudoku is the toughest grid we generate, built on the bare minimum of clues a sudoku can have. (No proper sudoku has fewer than 17 given numbers — that's a proven mathematical limit.) Expect to use the full set of advanced techniques and plenty of pencil marks, but never a guess: there's exactly one solution waiting. If it's too brutal, master and expert step it down a notch.

Four puzzles per page packs a small batch onto one sheet — ideal for a day's worth of solving, a road trip or a stack to keep by the kettle. The grids are a touch smaller, so it suits solvers who don't need a lot of writing room. It prints cleanly on both A4 and US Letter, straight from your browser or as a saved PDF. Turn solutions on first if you want the answer key.

More printables

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Frequently asked questions

How many sudoku fit on a 4-per-page sheet?
Four Evil 9×9 grids per page — a handy small batch for a trip or a few days of solving. The grids are a little smaller; the sheet prints to A4 and US Letter alike.
How many clues does an evil sudoku have?
Evil 9×9 sudoku uses close to the minimum number of clues. No proper sudoku can have fewer than 17 givens — a proven limit — so it leans on advanced techniques, never guessing.
Can I print the answers too?
Yes. Toggle solutions on before you print or save the PDF, and the answer key prints alongside your puzzles. Leave it off for a clean sheet — it's free either way, no sign-up.

How to solve these

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