Puzzle guide
How to play Sudoku online
Sudoku is the number puzzle where every row, column, and 3×3 box must contain the digits 1 through 9 once. You can play Sudoku online free on this site with notes, a checker, and a saved best time — no download and no account.
A fresh puzzle is dealt from our bank each time you start a new game. That makes it a good brain game for adults who want one focused grid rather than an endless feed. You can pencil candidates, place a digit when you are sure, and check your work without being interrupted after every keystroke.
People often ask whether they can play sudoku online free on a phone, a work laptop, or a Chromebook without installing anything. This Sudoku page is the playable answer we maintain: a free browser build, the controls listed below, and no account wall. If a network blocks unusual software but still loads ordinary websites, this is standard HTML — we do not offer tools for bypassing filters.
Play Sudoku now — no download, in your browser.
How do you play Sudoku?
Select a cell, then type a number or tap one on the on-screen pad. Use Notes to pencil in candidates when a cell still has more than one possibility. The checker verifies the digits you have filled so far against the solution, which is handy if you suspect a slip.
Given digits cannot be changed. The puzzle is solved when every cell is correctly filled. There is no multiplayer and no daily lock on this page — you can start a new grid whenever you like, separate from the site's rotating daily word game.
What controls does Sudoku use?
A keyboard is fastest on a computer: click a cell and type 1–9. On a phone, tap the cell and then the number pad. Toggle Notes when you want pencil marks instead of a final digit. The timer starts on your first placement, not while the start overlay is still up.
What are the best tips for Sudoku?
Scan for singles: a cell with only one candidate, or a digit that can go in only one place in a box. Fill those before you guess. Keep notes tidy — erase a candidate as soon as a neighbor rules it out, or the grid becomes noise.
When you stall, pick a crowded box and ask where each missing digit can legally go. Avoid placing a digit you are not sure about just to make progress; one wrong guess can silently break several boxes. Use Check if you want a sanity pass before you go further.
How does scoring work in Sudoku?
Your result is the time to a correct grid, and the best time is stored in this browser. Starting a new puzzle deals a different bank entry. If you enjoy this kind of steady logic, Minesweeper and 2048 scratch a similar itch with different rules.
What should you play after Sudoku?
When you are ready for something else, try Minesweeper, 2048, Word Search, free brain games for adults, or puzzle games you can play online. You can also browse the Puzzle category for more of the same mood.