AI SUDOKU
Printable Sudoku Puzzles
Free printable Sudoku across four difficulties — Easy, Medium, Hard and Expert. Generate your own custom set and download it as a print-ready PDF with answer keys, or print the ready-made puzzles below. No sign-up, no watermark.
Every puzzle is real. Each grid is generated by the same solver that powers our online Sudoku game and machine-verified to have exactly one solution — so every puzzle is fair and solvable by logic alone, never by guessing. Answer keys are at the bottom of the page.
Generate your own printable set
Pick a difficulty and how many puzzles, then download a print-ready PDF with answer keys. Every puzzle is freshly generated and machine-verified to have exactly one solution.
Easy Printable Sudoku
about 45 given numbers — solvable with simple scanning and single candidates.
2
1
4
6
7
3
2
7
1
3
4
9
6
8
9
4
2
3
7
1
2
3
7
9
6
5
5
9
1
2
3
2
1
8
9
5
7
3
4
5
7
8
2
8
2
7
6
5
8
9
4
2
2
1
7
3
2
6
5
9
4
2
7
6
8
6
9
3
8
1
8
3
6
5
1
4
4
1
5
7
4
2
3
8
3
7
9
6
1
4
6
5
2
8
4
2
9
1
5
3
1
4
3
6
2
7
7
8
6
1
6
2
7
9
8
9
1
7
2
2
9
5
3
4
7
5
3
4
2
6
4
7
8
3
9
6
8
4
9
1
3
5
5
3
6
1
9
1
3
5
6
7
4
2
3
9
4
8
5
6
1
2
9
6
8
7
4
7
3
6
7
9
5
1
5
3
2
9
4
8
6
8
3
9
1
9
1
8
7
2
5
3
6
9
2
3
5
8
9
3
4
8
5
2
6
5
1
6
8
7
3
7
1
6
5
4
8
3
2
7
3
9
8
1
5
2
4
6
3
7
3
4
6
4
6
8
1
5
2
7
1
4
6
4
3
2
6
9
8
1
6
1
4
3
4
5
3
7
1
2
1
8
6
2
5
9
1
6
7
Medium Printable Sudoku
about 34 givens — hidden singles and candidate elimination come into play.
3
2
4
7
4
2
5
9
3
6
5
1
2
9
6
7
5
8
7
3
1
6
5
5
7
4
5
9
1
6
1
4
6
2
3
9
4
5
7
3
9
9
7
3
1
2
7
3
4
5
1
6
7
2
3
6
1
3
2
6
4
7
9
6
9
3
2
4
3
9
6
8
3
7
6
2
1
7
7
8
9
5
6
1
4
2
2
6
3
9
1
7
4
3
9
8
9
7
1
8
5
9
7
5
8
4
1
7
3
3
7
5
1
4
8
1
6
9
3
5
6
1
5
7
3
8
2
3
6
7
7
1
3
2
7
3
1
4
5
1
6
4
6
4
2
8
7
5
1
2
3
1
8
7
9
7
9
5
3
1
4
2
8
4
3
7
9
7
5
6
9
8
1
5
6
9
3
2
5
2
9
6
4
7
6
7
4
8
1
9
8
4
3
5
7
2
1
3
6
4
Hard Printable Sudoku
about 28 givens — expect naked pairs and pointing pairs.
5
7
1
9
9
6
7
1
4
3
2
8
1
8
5
3
9
9
6
7
3
7
9
8
2
6
7
4
8
2
7
3
4
3
6
1
4
5
9
2
6
5
3
6
1
9
5
8
9
8
9
4
7
7
4
6
8
7
1
4
9
6
2
1
5
2
3
3
6
8
1
9
1
2
7
5
1
2
6
6
9
7
1
5
4
4
7
3
9
9
2
8
5
5
2
7
9
1
3
8
1
3
6
5
4
5
4
9
1
8
4
9
5
3
7
7
2
5
8
4
9
6
2
1
5
6
7
6
5
4
7
8
2
6
9
2
8
7
5
3
1
8
9
6
5
3
4
8
8
1
6
2
6
9
8
5
9
1
6
8
2
9
8
5
7
4
5
9
6
5
3
Expert Printable Sudoku
about 24 givens, near the minimum — patient pencil-mark bookkeeping required.
3
6
1
8
5
9
1
1
9
7
4
6
1
5
9
6
6
4
1
8
4
2
7
5
6
8
2
9
3
5
2
6
4
7
9
5
3
1
2
4
3
8
7
5
4
2
6
3
8
2
8
1
6
8
4
9
5
6
8
7
4
9
1
8
5
2
1
6
7
5
4
9
6
7
3
9
3
8
5
2
4
9
3
4
9
2
1
4
8
6
7
5
2
9
6
8
1
5
3
6
3
1
3
6
8
1
7
3
5
5
4
3
1
1
4
6
9
2
4
8
6
2
9
1
3
4
9
2
5
6
4
7
3
2
5
5
6
2
9
4
5
2
5
7
6
1
3
Answer Keys
Solutions for all 24 puzzles above, in the same order.
Easy — Answers
9
3
8
6
5
2
7
4
1
4
5
6
7
8
1
3
2
9
7
1
2
3
4
9
6
5
8
6
9
4
5
2
3
1
8
7
1
2
3
4
7
8
9
6
5
5
8
7
9
1
6
2
3
4
2
6
1
8
9
5
4
7
3
3
4
5
1
6
7
8
9
2
8
7
9
2
3
4
5
1
6
7
1
6
5
8
9
3
4
2
5
2
4
1
7
3
9
6
8
3
9
8
2
6
4
7
5
1
1
5
9
4
2
7
6
8
3
4
6
7
9
3
8
2
1
5
2
8
3
6
5
1
4
7
9
6
4
2
3
1
5
8
9
7
9
7
1
8
4
2
5
3
6
8
3
5
7
9
6
1
2
4
3
6
5
2
9
7
1
8
4
2
9
7
8
1
4
6
5
3
1
8
4
3
6
5
2
7
9
7
4
8
9
3
2
5
6
1
6
5
2
4
7
1
9
3
8
9
1
3
5
8
6
7
4
2
8
2
9
6
5
3
4
1
7
5
3
1
7
4
9
8
2
6
4
7
6
1
2
8
3
9
5
6
8
7
4
9
1
3
2
5
2
5
3
8
6
7
1
9
4
9
4
1
5
3
2
8
7
6
5
6
8
7
1
4
2
3
9
7
9
4
2
8
3
5
6
1
3
1
2
9
5
6
4
8
7
8
2
9
6
4
5
7
1
3
4
3
6
1
7
8
9
5
2
1
7
5
3
2
9
6
4
8
6
8
3
9
2
4
1
7
5
9
1
4
8
5
7
2
6
3
7
2
5
3
1
6
4
9
8
2
7
6
4
3
5
8
1
9
3
4
8
1
7
9
5
2
6
5
9
1
6
8
2
3
4
7
8
3
2
7
9
1
6
5
4
1
6
9
5
4
8
7
3
2
4
5
7
2
6
3
9
8
1
7
5
2
4
9
6
8
1
3
9
1
8
7
2
3
5
4
6
3
4
6
8
1
5
2
9
7
8
7
1
3
5
4
9
6
2
4
3
5
2
6
9
7
8
1
2
6
9
1
7
8
4
3
5
6
9
4
5
3
7
1
2
8
1
8
7
6
4
2
3
5
9
5
2
3
9
8
1
6
7
4
Medium — Answers
6
5
3
2
1
4
7
8
9
4
2
8
5
9
7
3
6
1
9
1
7
6
8
3
5
4
2
1
8
2
9
6
5
4
3
7
5
3
6
7
4
2
1
9
8
7
4
9
8
3
1
6
2
5
3
6
5
1
2
8
9
7
4
2
7
4
3
5
9
8
1
6
8
9
1
4
7
6
2
5
3
1
2
3
6
9
4
5
7
8
5
6
7
1
8
3
4
9
2
9
8
4
5
7
2
1
6
3
6
1
8
2
4
7
3
5
9
4
3
5
8
1
9
6
2
7
7
9
2
3
5
6
8
1
4
3
5
9
4
2
1
7
8
6
2
4
1
7
6
8
9
3
5
8
7
6
9
3
5
2
4
1
4
7
3
9
1
6
5
8
2
9
5
8
3
7
2
4
6
1
2
1
6
8
4
5
3
9
7
7
4
1
2
8
9
6
5
3
3
6
9
1
5
4
7
2
8
8
2
5
6
3
7
1
4
9
1
8
2
5
6
3
9
7
4
5
3
7
4
9
8
2
1
6
6
9
4
7
2
1
8
3
5
9
7
5
3
1
4
2
6
8
4
2
1
9
6
8
5
7
3
6
8
3
2
7
5
9
1
4
8
6
7
4
2
1
3
9
5
5
4
2
6
9
3
7
8
1
3
1
9
5
8
7
4
2
6
1
5
6
7
3
2
8
4
9
2
3
8
1
4
9
6
5
7
7
9
4
8
5
6
1
3
2
7
3
8
5
9
1
2
6
4
5
1
2
8
6
4
9
3
7
6
4
9
2
7
3
8
1
5
8
7
5
9
1
2
3
4
6
2
9
4
7
3
6
5
8
1
3
6
1
4
8
5
7
9
2
1
8
7
6
2
9
4
5
3
9
5
3
1
4
7
6
2
8
4
2
6
3
5
8
1
7
9
2
3
7
9
8
5
1
4
6
4
9
6
3
2
1
8
7
5
1
5
8
7
6
4
9
3
2
5
2
3
8
1
9
7
6
4
8
4
1
2
7
6
5
9
3
6
7
9
4
5
3
2
8
1
9
8
4
1
3
2
6
5
7
7
6
2
5
4
8
3
1
9
3
1
5
6
9
7
4
2
8
Hard — Answers
5
6
3
7
8
1
9
2
4
2
4
9
6
3
5
7
1
8
8
7
1
2
4
9
3
6
5
3
2
5
9
6
7
8
4
1
7
8
4
5
1
3
2
9
6
9
1
6
8
2
4
5
7
3
1
5
2
3
7
6
4
8
9
4
9
8
1
5
2
6
3
7
6
3
7
4
9
8
1
5
2
9
2
7
5
3
6
1
4
8
4
1
5
7
9
8
3
6
2
8
3
6
1
2
4
5
9
7
7
9
1
8
4
2
6
5
3
3
4
2
6
5
1
8
7
9
6
5
8
9
7
3
4
2
1
1
8
9
4
6
7
2
3
5
2
7
4
3
1
5
9
8
6
5
6
3
2
8
9
7
1
4
6
1
8
2
5
4
3
7
9
9
4
3
7
6
8
2
1
5
5
2
7
3
1
9
4
6
8
7
3
6
4
8
5
1
9
2
2
5
4
1
9
7
6
8
3
8
9
1
6
2
3
7
5
4
3
7
5
9
4
1
8
2
6
4
6
9
8
7
2
5
3
1
1
8
2
5
3
6
9
4
7
4
8
7
5
3
1
2
6
9
2
9
5
6
8
7
1
4
3
6
3
1
9
2
4
8
5
7
5
4
2
8
7
9
6
3
1
3
6
9
4
1
5
7
2
8
1
7
8
3
6
2
5
9
4
7
5
4
1
9
6
3
8
2
9
2
3
7
5
8
4
1
6
8
1
6
2
4
3
9
7
5
3
1
4
9
5
7
2
8
6
7
2
5
1
6
8
4
3
9
9
6
8
4
2
3
5
1
7
8
9
7
5
1
2
3
6
4
2
4
3
7
9
6
1
5
8
1
5
6
8
3
4
7
9
2
4
7
1
6
8
5
9
2
3
6
3
9
2
4
1
8
7
5
5
8
2
3
7
9
6
4
1
3
1
2
6
8
4
7
5
9
6
5
7
3
9
2
4
1
8
4
9
8
7
5
1
6
2
3
2
6
3
9
7
8
1
4
5
8
4
1
5
2
3
9
6
7
9
7
5
1
4
6
3
8
2
1
2
9
8
6
7
5
3
4
7
3
4
2
1
5
8
9
6
5
8
6
4
3
9
2
7
1
Expert — Answers
8
4
5
6
9
7
2
1
3
6
1
2
8
5
3
4
7
9
9
3
7
2
4
1
8
5
6
1
8
3
5
2
9
7
6
4
7
6
4
3
1
8
9
2
5
5
2
9
4
7
6
3
8
1
2
5
8
9
6
4
1
3
7
3
9
1
7
8
5
6
4
2
4
7
6
1
3
2
5
9
8
4
6
1
5
9
7
3
2
8
2
9
7
3
1
8
4
6
5
3
5
8
2
6
4
9
7
1
7
4
6
9
3
5
8
1
2
8
3
9
7
2
1
5
4
6
1
2
5
8
4
6
7
3
9
6
1
3
4
5
9
2
8
7
5
8
4
1
7
2
6
9
3
9
7
2
6
8
3
1
5
4
6
4
1
3
2
9
8
5
7
2
5
9
8
4
7
3
1
6
3
8
7
5
1
6
4
9
2
5
6
8
2
7
4
9
3
1
4
7
2
9
3
1
5
6
8
1
9
3
6
8
5
2
7
4
7
2
4
1
9
3
6
8
5
8
3
6
7
5
2
1
4
9
9
1
5
4
6
8
7
2
3
4
7
9
6
8
2
5
3
1
8
3
6
5
9
1
4
7
2
1
5
2
4
3
7
9
8
6
3
4
7
8
1
5
2
6
9
5
2
1
9
6
3
7
4
8
9
6
8
2
7
4
3
1
5
7
8
3
1
2
9
6
5
4
6
9
4
3
5
8
1
2
7
2
1
5
7
4
6
8
9
3
6
7
5
3
8
4
9
1
2
3
9
1
2
6
5
8
7
4
4
8
2
1
7
9
3
6
5
5
3
8
9
4
1
7
2
6
7
2
6
5
3
8
4
9
1
9
1
4
6
2
7
5
3
8
8
5
9
7
1
6
2
4
3
1
4
3
8
9
2
6
5
7
2
6
7
4
5
3
1
8
9
1
3
4
2
9
7
5
6
8
7
6
8
4
5
3
9
1
2
2
9
5
1
8
6
7
4
3
4
7
1
3
6
8
2
5
9
5
8
9
7
2
1
4
3
6
3
2
6
9
4
5
1
8
7
8
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5
7
2
6
9
4
9
5
2
6
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8
1
9
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2
5