Game guide · JK-TJ
How to play Killer Sudoku
Open Killer Sudoku, check the instructions and begin a round. Fill rows, columns and boxes with 1–9 once. Cage digits cannot repeat and must add to their clue. Use the example below to understand a decision. Begin with the solo mode shown on the page. Keep the game area visible while you use its controls.
This collection contains 8 puzzles. Progress is saved in this browser. The same puzzle can appear again; the collection is not labelled with calibrated difficulty levels.
Something to practise
Locate the buttons and input area before beginning a long round. Use the on-screen labels to avoid an accidental restart. Keep the objective visible.
What you are aiming for
Fill rows, columns and boxes with 1–9 once. Cage digits cannot repeat and must add to their clue. Keep that objective in view throughout the round. Follow this game’s rules rather than another version’s.
Making your moves
- Select an editable cell.
- Enter a value using the keypad or keyboard; Notes stores candidates.
- Read the region, cage, arrow or outside clues alongside the normal constraints.
- Check entries verifies the completed board; Undo reverses your last input.
- New puzzle selects another included puzzle.
Controls
Click or tap cells and the digit pad. Use Notes, Undo and Reveal selected. Large boards scroll inside the game. On a smaller screen, keep the active part of the board within view. Make sure you are interacting with the game rather than the surrounding page.
Learn from a sample situation
A two-cell cage labelled 3 holds 1 and 2; a one-cell cage fixes its own value. Your next round may have a different position, so inspect it before acting. Notice the change in the playing area.
Keep this in mind
A full board must obey every extra rule. Reveal supplies assistance; it is not an earned deduction. Check the rule before repeating the action. Watch the feedback after an action. A message can explain whether the input was accepted or whether a rule needs attention.
Read these answers for extra help
Before I begin, what is the goal of Killer Sudoku?
Fill rows, columns and boxes with 1–9 once. Cage digits cannot repeat and must add to their clue.
For a quick reminder, how do I control Killer Sudoku?
Keep this in mind: Click or tap cells and the digit pad. Use Notes, Undo and Reveal selected. Large boards scroll inside the game.
Before I begin, what example helps explain Killer Sudoku?
A two-cell cage labelled 3 holds 1 and 2; a one-cell cage fixes its own value.
As a new player, what should I watch out for in Killer Sudoku?
Keep this in mind: A full board must obey every extra rule. Reveal supplies assistance; it is not an earned deduction.
Before I begin, what format does Killer Sudoku offer?
For clarity: This collection contains 8 puzzles. Progress is saved in this browser. The same puzzle can appear again; the collection is not labelled with calibrated difficulty levels.
While learning, which play mode does Killer Sudoku use?
Keep this in mind: The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.
Where should I start with Killer Sudoku?
Select an editable cell.
Before I begin, do I need an account or a payment for Killer Sudoku?
For clarity: No player account or payment is needed. Game scores are recreational results, not cash prizes.
How can I find Killer Sudoku again?
Keep this in mind: Use the Games list or save this game page in your browser bookmarks. The Guide is linked from the playing page.
Before I begin, how do I report an issue with Killer Sudoku?
Use the contact form and include the game name, browser, device and the actions that led to the issue. Do not send passwords or payment details.
