Easy
41 cluesWarm-up friendly. 38 to 45 clues to get you started.
Play →A fresh sudoku every day at UTC midnight. Pick your difficulty, play in your browser, and your progress saves itself. No signup, no ads, no tracking.
From gentle warm-ups to absolute brain-burners. Each day's puzzle is available at every level — switch any time.
Warm-up friendly. 38 to 45 clues to get you started.
Play →Our daily default. A balanced 30 to 36 clues.
Play →Step up. 26 to 29 clues, fewer obvious moves.
Play →Sharp focus. 22 to 25 clues, lots of elimination.
Play →Patience required. 19 to 21 clues, deep chains.
Play →Brutal. 17 to 18 clues, the hardest we publish.
Play →Click any empty square. The row, column, and box light up so you can scan at a glance.
Press 1–9 to fill, or toggle notes mode to pencil in candidates. Conflicts turn red so you catch mistakes early.
A clean solve auto-saves your stats. Share a link, then come back for a fresh puzzle tomorrow.
A short list of things other sudoku sites add. We deliberately don't.
Open the page and play. No email, no account, no password to forget.
No banners, no interstitials, no sponsored puzzles. The page is just the puzzle.
No third-party analytics, no fingerprinting, no behaviour profiling. Your game stays in your browser.
English and 中文, one click. The page remembers your choice on this device.
Cream-and-forest by day, forest-and-cream by night. Or follow the system.
Every move is written to your browser. Refresh, close the tab, come back tomorrow — same game resumes.
Arrow keys to move, digits to fill, Ctrl+Z to undo, N for new, T for theme, L for language.
Free forever. Open the page, take a breath, fill a row.
think daily, enjoy daily