SudokuKE

SudokuKE — Classic Sudoku, Perfected

Sharpen your mind with SudokuKE, a beautifully designed Sudoku puzzle game built for players who want a fair, polished, and genuinely endless challenge.

WHY YOU'LL LOVE IT

🧩 Truly unlimited puzzles
Three difficulties — Easy, Medium, Hard — each with as many levels as you want to play. Difficulty ramps up naturally as you progress, then holds steady, so the challenge never runs out and never becomes unfair.

✅ Every puzzle is guaranteed solvable
Each grid is checked by a real solving algorithm to have exactly one correct solution before you ever see it. No guessing, no broken puzzles.

🎯 Plays by real Sudoku rules
A number is only flagged as a mistake when it actually conflicts with another number in its row, column, or box — not simply because it differs from some hidden answer. Solve it your way, right up until it matters.

💡 Hints and Undo when you need them
Stuck on a cell? Reveal it with a hint. Made a mistake? Undo your last moves. Run out of your free allowance and grab one more instantly.

🎨 Beautiful in light or dark
Switch between a warm light theme and a rich dark theme any time from the home screen.

📊 Track your progress
Best completion times are saved for every level, with your current difficulty and level always visible while you play.

🖊️ Full pencil-mark notes
Jot down candidate numbers in any cell, exactly like solving on paper.

No sign-up. No internet connection required to play. Just open the app and start solving.

SudokuKE is free to play, supported by ads.