Sudoku - A Classic Logic Puzzle

Sudoku – A Clean, Modern Puzzle Experience

Rediscover the timeless logic challenge of Sudoku, re-imagined for the modern web.
Built for beginners. Loved by experts. Perfect for anyone who enjoys a good puzzle.

No ads. No clutter. Just you, the grid, and the thrill of solving.

🎮 Features

• Multiple Grid Sizes
  Go beyond the classic 9x9. Try quick 4x4 puzzles or the refreshing twist of 6x6 grids.

• Four Difficulty Levels
  From Easy to Expert, each puzzle is algorithmically generated to be unique and always solvable.

• Clean, Responsive Design
  Optimized for both desktop and mobile—play anytime, anywhere.

• Undo & Redo
  Made a mistake? Step back or forward with ease (Ctrl+Z / Ctrl+Y).

• Smart Hints
  Stuck? Get a gentle nudge without spoiling the solution.

• Instant Error Checking
  Highlight incorrect entries at any time—perfect for learning or refining your skills.

• Auto Save
  Leave anytime and return without missing a beat. Your game, timer, and history are saved automatically.

• Light & Dark Themes
  Choose the look that fits your mood or lighting.

• Keyboard Friendly
  Navigate and play entirely with your keyboard for fast, fluid control.

• Toggleable Sound Effects
  Subtle feedback to enhance focus—easily turned off in settings.

🧠 How to Play

The objective: fill every row, column, and sub-grid with each number exactly once.

Mouse Controls

• Click a cell to select.

• Use the number palette to fill or erase.

Keyboard Controls

• Arrow Keys – Move between cells

• 1–9 – Enter a number

• Backspace/Delete – Erase a number

• Ctrl+Z – Undo

• Ctrl+Y – Redo