🧩 Classic Sudoku, Zero Frustration

A clean, fast Sudoku you can play anywhere — on desktop, tablet or phone. Every puzzle is generated and verified to have exactly one solution, so you never have to guess.

✨ Features

  • 3 difficulties — Easy, Medium, Hard
  • Pencil marks for noting candidates
  • Error checking — wrong numbers turn red instantly
  • Smart hints — 3 free hints per puzzle, undo anytime
  • Timer & mistake counter
  • Star rating — 3 stars for a mistake-free solve
  • Progress auto-saved — close the tab, resume later
  • Unique-solution guarantee — every board is solver-verified
  • Original music & sound effects — one-tap mute toggle

🎮 How to play

  • Desktop: click a cell, press 1–9. Arrow keys move, Z undoes.
  • Mobile: tap a cell, then tap a number on the keypad.
  • Fill every row, column and 3×3 box with 1–9. That's it!

Runs in any modern browser — desktop, tablet and phone. No download, no account, progress saved locally.

Part of BrainBox — free brain puzzle games that run in any browser. More puzzles coming soon!

More information
Published 4 days ago
StatusReleased
PlatformsHTML5
Authorbrainboxgames
GenrePuzzle
Tagsbrain, Casual, classic, logic, numbers, sudoku
AI DisclosureAI Assisted, Graphics