Game guide · CHENYANGDA
Killer Sudoku: how a round works
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. Keep the game area visible while you use its controls. Read the objective before making your first input. Look at what changes after your first action.
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
Watch the feedback after an action. A message can explain whether the input was accepted or whether a rule needs attention. Make the next step deliberately.
Your goal
Fill rows, columns and boxes with 1–9 once. Cage digits cannot repeat and must add to their clue. The feedback beside the game helps you follow the round. Check the rules when you are unsure.
How to proceed
- 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.
How your actions work
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. Read the example below alongside these instructions.
See how the rules apply
A two-cell cage labelled 3 holds 1 and 2; a one-cell cage fixes its own value. Focus on why the action is allowed, not only its outcome. Notice the change in the playing area.
Watch out for this
A full board must obey every extra rule. Reveal supplies assistance; it is not an earned deduction. Compare the situation with the worked example. Take enough time to read a new position. If a game has a timer, learn its controls first rather than searching for them during the round.
More answers before you play
Before I begin, what is the goal of Killer Sudoku?
Keep this in mind: Fill rows, columns and boxes with 1–9 once. Cage digits cannot repeat and must add to their clue.
While reading the Guide, how do I control Killer Sudoku?
Click or tap cells and the digit pad. Use Notes, Undo and Reveal selected. Large boards scroll inside the game.
While learning, what example helps explain Killer Sudoku?
A two-cell cage labelled 3 holds 1 and 2; a one-cell cage fixes its own value.
On this playing page, what should I watch out for in Killer Sudoku?
The key detail is this: A full board must obey every extra rule. Reveal supplies assistance; it is not an earned deduction.
What format does Killer Sudoku offer?
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.
When I return, which play mode does Killer Sudoku use?
For clarity: The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.
While reading the Guide, where should I start with Killer Sudoku?
Keep this in mind: Select an editable cell.
On this playing page, do I need an account or a payment for Killer Sudoku?
Keep this in mind: No player account or payment is needed. Game scores are recreational results, not cash prizes.
While reading the Guide, how can I find Killer Sudoku again?
The key detail is this: Use the Games list or save this game page in your browser bookmarks. The Guide is linked from the playing page.
While reading the Guide, how do I report an issue with Killer Sudoku?
For clarity: 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.