Sudoku Plus
Sudoku Plus takes the timeless number-placement puzzle and adds a few thoughtful conveniences for today's players. The goal stays true to the classic: fill the 9x9 grid so every row, column, and 3x3 subgrid contains the digits 1 through 9 exactly once. But instead of leaving you stranded, this version includes built-in hint systems and optional timed runs, giving you a hand when you're stuck and an extra layer of excitement when you want to race the clock. Whether you're a seasoned solver or just getting comfortable with the rules, Sudoku Plus offers a clean, distraction-free interface that keeps the focus on the puzzle itself. Each game starts with a partially filled board, and your job is to deduce the correct placements using logic alone—no guessing required. With a fresh puzzle every time and features that adjust to your pace, it's a brain workout that feels both familiar and refreshingly new.
WaffleMath
Common Core State Standards
Every game supports specific Common Core standards. Browse the full standards library.
Practice by Skill
Games by Grade
What is Sudoku Plus
Sudoku Plus offers a clean, feature-rich take on the classic number puzzle, perfect for quick mental breaks or deep concentration sessions.
How to Play
Select an empty cell and choose a number from 1 to 9 to fill it, making sure no row, column, or 3x3 box repeats a digit. Use the hint button if you get stuck, and optionally start a timer to track your solving speed.
Tips for Playing
- Start by scanning rows, columns, and boxes for obvious single-missing numbers.
- Use pencil marks to note possible candidates in each cell, then eliminate gradually.
- Focus on one 3x3 box at a time to reduce the board's complexity.
- If you're stuck, look for pairs or triples that restrict placements in a row or box.
- When timing yourself, resist the urge to guess—accuracy beats speed every time.
Frequently Asked Questions
What happens if I place a wrong number?
You can simply click the cell and choose another number. There's no penalty, so feel free to experiment.
Is there a way to get help if I'm stuck?
Yes, the hint system will point you to a correct placement or show a valid candidate for a selected cell.
Can I play at my own pace without a timer?
Absolutely. Timed mode is optional, so you can turn it off and solve leisurely without pressure.
Are there different difficulty levels?
Most versions of Sudoku Plus include multiple difficulty settings, from easy to expert, to suit your skill level.
How do I know if I've completed the puzzle?
The game will automatically check your solution once all cells are filled, and you'll see a success message if it's correct.
Does the game work on mobile devices?
Yes, Sudoku Plus is designed to be responsive and works well on both desktop and touch-screen devices.
