Hey Product Hunt — Raz here, maker of Kodiak Sudoku. I play sudoku most mornings and got worn down by every app being a tax on my attention: ads between puzzles, "watch this video to undo," modal popups, paywalled hints. So I spent the last few weeks building the version I actually wanted. A few choices that may be interesting: 🎹 Keyboard-first. Arrow keys, vim-style hjkl, undo/redo, notes, hints — every action has a shortcut. You can solve a whole puzzle without touching the mouse. 📅 Daily puzzle with an honest leaderboard. One shared puzzle a day. The leaderboard separates pure runs (no hints) from runs with help — most apps lump them together, which makes the top of the board meaningless. This was the bug I most wanted to fix. 🆓 Genuinely free. No ads, no freemium, no tracking beyond basic analytics. There's no monetization at all right now. I'll be upfront if that ever changes. ⚡ Quick play for short sessions, challenge links to send a friend the same puzzle, streaks if you sign in, anonymous play if you don't. Stack: Next.js 15 / React 19 / TypeScript / Supabase + Drizzle / Tailwind / Vercel. Custom solver in TypeScript for difficulty grading. Roadmap: speed notes, replay mode, killer/thermo/arrow variants, 6×6 mini for coffee-break solves. Would love honest feedback — what's confusing, what's missing, what would make you come back tomorrow? And if you spot a bug, even better.

Kodiak Sudoku

Sudoku without the ads. Keyboard-first. Daily leaderboard.

Sudoku without the ads. Keyboard-first. Daily leaderboard.