Write
Handwriting input
Write numbers directly into the Sudoku grid with finger, stylus or Apple Pencil.
About SudoSketch
About SudoSketch
SudoSketch is built for people who like Sudoku on paper, but want the convenience of a clean online puzzle board.
A Sudoku site built around natural solving
SudoSketch started from a simple idea: online Sudoku should not force every player into tiny keypad tapping. If you enjoy writing numbers into a grid, the digital version should support that rhythm properly.
The site combines free online Sudoku with handwriting input, notes, daily puzzles, six difficulty levels, step-by-step coaching and interactive lessons. The goal is not to make Sudoku flashy. The goal is to make it feel natural, fair and genuinely useful.
That is why SudoSketch leans into handwriting, human-friendly puzzle grading and learning content rather than becoming another anonymous Sudoku grid with adverts bolted on like an afterthought.
What makes SudoSketch different
Learn
Logic-first solving
Puzzles and coaching are designed around Sudoku logic, not random guessing.
Progress
Clear difficulty levels
Beginner, Easy, Medium, Hard, Master and Insane levels help players build steadily.
Built to help every solver improve
SudoSketch helps players move from spotting obvious numbers to understanding why each move works. Technique guides explain the pattern, the Learn Arena lets you practise it, and Sudoku Coach helps you find it in a real puzzle.
That learning path runs from the first Naked Single to X-Wings, chains and harder logic, with no guessing required.
About SudoSketch FAQ
Is SudoSketch free?
Yes. SudoSketch is free to play online without creating an account.
Who is SudoSketch for?
SudoSketch is for anyone who enjoys Sudoku, from beginners learning the rules to experienced players who want harder logic puzzles.
What makes SudoSketch different from other Sudoku sites?
SudoSketch combines handwriting input, fair logical puzzles, interactive lessons and a Coach that explains Sudoku techniques clearly.