Verified dated Sudoku collection

Daily Sudoku challenge collection

Open the latest available challenge

Each published challenge date has a permanent page. The Legen Puzzle Engine checks every puzzle, and a separate proof verifier rechecks each published key step. Challenge dates are not webpage publication dates.

Available through: July 31, 2026

1. 2026-07-174 × Easy · Medium · Hard · Expert
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2. 2026-07-184 × Easy · Medium · Hard · Expert
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3. 2026-07-194 × Easy · Medium · Hard · Expert
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4. 2026-07-204 × Easy · Medium · Hard · Expert
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5. 2026-07-214 × Easy · Medium · Hard · Expert
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6. 2026-07-224 × Easy · Medium · Hard · Expert
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7. 2026-07-234 × Easy · Medium · Hard · Expert
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8. 2026-07-244 × Easy · Medium · Hard · Expert
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9. 2026-07-254 × Easy · Medium · Hard · Expert
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10. 2026-07-264 × Easy · Medium · Hard · Expert
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11. 2026-07-274 × Easy · Medium · Hard · Expert
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12. 2026-07-284 × Easy · Medium · Hard · Expert
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13. 2026-07-294 × Easy · Medium · Hard · Expert
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14. 2026-07-304 × Easy · Medium · Hard · Expert
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15. 2026-07-314 × Easy · Medium · Hard · Expert
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