Game guide · ARTSTAREDU
Rules, controls and help for Killer Sudoku
Take a moment with Killer Sudoku before moving to another game. 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. Choose a clear next step rather than rushing through the instructions.
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.
Bring this focus to a round
Compare the worked example with your own position. Use the reasoning, not an answer copied from a different board. Keep the objective visible.
Understand the aim
Fill rows, columns and boxes with 1–9 once. Cage digits cannot repeat and must add to their clue. Use the instructions to see which actions move you towards it. The example below illustrates a decision.
A walkthrough of the rules
- 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.
The controls to know
Click or tap cells and the digit pad. Use Notes, Undo and Reveal selected. Large boards scroll inside the game. Use the control method described here for this activity. Contact us with the game and device if a control does not respond.
A useful example
A two-cell cage labelled 3 holds 1 and 2; a one-cell cage fixes its own value. Use the example as a guide rather than a substitute for reading your board. Consider the next action carefully.
A mistake to avoid
A full board must obey every extra rule. Reveal supplies assistance; it is not an earned deduction. Check the rule before repeating the action. Read one step at a time and try it on the playing area. Match the instruction to the control you use.
Helpful answers for players
For a quick reminder, 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.
While learning, how do I control Killer Sudoku?
For clarity: Click or tap cells and the digit pad. Use Notes, Undo and Reveal selected. Large boards scroll inside the game.
For a quick reminder, what example helps explain Killer Sudoku?
Here is the relevant explanation: A two-cell cage labelled 3 holds 1 and 2; a one-cell cage fixes its own value.
For my first round, what should I watch out for in Killer Sudoku?
For clarity: A full board must obey every extra rule. Reveal supplies assistance; it is not an earned deduction.
On this playing page, 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.
For my first round, 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.
While learning, where should I start with Killer Sudoku?
Select an editable cell.
For my first round, do I need an account or a payment for Killer Sudoku?
No player account or payment is needed. Game scores are recreational results, not cash prizes.
As a new player, how can I find Killer Sudoku again?
Here is the relevant explanation: 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?
Keep this in mind: 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.