THE PLAYBOOK · 0731222
How to play Killer Sudoku
Start Killer Sudoku by looking at the playing area and its controls. Fill rows, columns and boxes with 1–9 once. Cage digits cannot repeat and must add to their clue. Choose a clear next step rather than rushing through the instructions. Keep the instructions close while learning this activity. 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.
A useful comparison
Compare the worked example with your own position. Use the reasoning, not an answer copied from a different board. Refer to the controls when needed.
Your goal
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. The example below illustrates a decision.
Step by step
- 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. A careful first action helps you become familiar with the layout. Read the example below alongside these instructions.
A useful example
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. Check the stated objective.
Watch out for this
A full board must obey every extra rule. Reveal supplies assistance; it is not an earned deduction. Read the feedback to see why an action did not have the expected result. Before your first action, say what you are trying to achieve. Then compare the result with the goal.
Common questions
As a new player, what is the goal of Killer Sudoku?
For clarity: Fill rows, columns and boxes with 1–9 once. Cage digits cannot repeat and must add to their clue.
For my first round, 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.
While learning, what example helps explain Killer Sudoku?
For clarity: A two-cell cage labelled 3 holds 1 and 2; a one-cell cage fixes its own value.
While learning, 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.
On this playing page, 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?
Here is the relevant explanation: The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.
