Free Printable Evil Sudoku
A freshly generated evil sudoku puzzle — the hardest tier we generate.
Puzzle ID: #294029×9 · 1 per pageevil
7
4
9
3
1
2
5
6
3
9
2
2
5
3
6
1
2
6
7
8
4
9
3
7
Generated via sudoku247online.com© 2026
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Free printable evil sudoku puzzles for the most dedicated solvers. Evil grids ship at the proven theoretical floor of 17–18 given numbers and require advanced techniques throughout — X-wing, swordfish, naked triples, hidden pairs, and patient candidate chains. Solving on paper with pencil marks is the standard approach; the working margins matter. Every puzzle is uniquely solvable by logic — no guessing required, but every step earned. Completely free, no account needed.