Play
Sudoku board
Play free puzzles across six difficulty levels, with notes, undo, highlighting and optional mistake checking.
How it works
How SudoSketch Works
SudoSketch combines a clean online Sudoku board with handwriting input, daily challenges, practical solving tools and step-by-step learning.
The basic flow
Choose a puzzle difficulty, open the Sudoku board and solve using whichever input method feels right: keypad, mouse, touch, finger, stylus or Apple Pencil.
You can enter final numbers, switch into notes mode, undo changes, highlight numbers and use optional checking tools when you want extra support.
Choose a level that suits you, play today's challenge or open any puzzle in Sudoku Coach when you want help finding the next logical move.
Everything you need to solve your way
Write
Handwriting input
Write numbers directly into the grid with Apple Pencil, stylus or finger, or use the keypad whenever you prefer.
Learn
Learn as you solve
Use the Coach for a logical next step, then practise individual techniques interactively in the Learn Arena.
One place to play, learn and improve
SudoSketch brings free online Sudoku, daily puzzles, six difficulty levels, handwriting play, printable Sudoku, an instant solver and human-style coaching into one connected experience.
Start with a Beginner puzzle, build confidence in the Learn Arena, or jump into advanced techniques such as X-Wing and XY-Wing. Every path leads back to a real puzzle you can solve.
How SudoSketch Works FAQ
Do I need to download SudoSketch?
No. SudoSketch works directly in a modern web browser.
Can I use normal keypad input?
Yes. Handwriting input is optional. Keypad and touch controls are still available.
Does SudoSketch include learning features?
Yes. Sudoku Coach explains the next logical move, the Learn Arena provides interactive technique lessons, and the guide library covers methods from singles to advanced chains.