
A complete offline Sudoku toolkit: generate genuinely graded 6×6 / 9×9 puzzles, solve on-screen, or export print-ready worksheet and answer PDFs
This self-contained, browser-based app covers the whole Sudoku workflow in one place. Generate puzzles at four real difficulty levels — rated by an actual logic-technique solver, not just clue count — or type in your own puzzle from any source and let the app validate it and work out the answer for you.
Pupils can solve directly on-screen with pen and pencil-mark modes, auto-seeded candidates, instant mistake feedback, digit highlighting, an optional reveal system, and a pausable timer. When you’re ready to print, export beautifully laid-out PDF worksheets — 1, 2, 4 or 6 puzzles per page, in A4 or A5, across any number of pages — with an optional compact answer booklet appended at the back.
Runs entirely offline after opening, with no installation, no login, and no pupil data ever uploaded anywhere — fully GDPR-compliant for classroom use.
Suitable across KS2–KS4 for starters, independent practice, differentiation, or full puzzle booklets, and versatile enough for maths, form time, or enrichment sessions.
Something went wrong, please try again later.
This resource hasn't been reviewed yet
To ensure quality for our reviews, only customers who have purchased this resource can review it
Report this resourceto let us know if it violates our terms and conditions.
Our customer service team will review your report and will be in touch.