Quiet Hours — Daily Sudoku

A calm new tab: one verified sudoku puzzle a day. Every puzzle has exactly one solution, checked independently before it ships.

A calm new tab for a daily sudoku break. Every time you open a new tab, you'll find one sudoku puzzle — easy, medium, or hard, your choice. Fill it in with a click and the number keys, check your work, or reveal the solution if you're stuck. Every single puzzle is independently verified before it ships. Not just generated and assumed correct — a separate solver re-checks each one from scratch and confirms it has exactly one solution. No guesswork, no duplicate answers, no puzzles with more than one valid solution. From Quiet Hours Press, makers of the Easy/Medium/Hard Sudoku paperback series.