Contact Us
Found a bug, have a feature idea, or a puzzle that stumped our solver? Drop us a line — we read every message.
Other Ways to Reach Us
You can also email us directly at [email protected].
Before You Write…
A few quick answers that might save you a message:
- "The solver says my puzzle has no solution." That almost always means a typo in the entered digits. Double-check the clues against the original — one wrong digit is enough.
- "Photo recognition missed a digit." Straight-on, well-lit photos with strong contrast work best. You can always correct single cells in the grid after recognition.
- "Can I use your puzzles in my newspaper/classroom/app?" Yes — puzzles you generate here are yours to use. See our Terms of Service for details.