THE PLAYBOOK · GYYSJZD
Find your footing in 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. Check the relevant rule before repeating a move. Identify the playing area and the controls you need. 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
When a decision goes wrong, compare it with the common mistake described below. Start again only when you intend to leave the current round. Make the next step deliberately.
The objective of a round
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. Review the board or playing area as it changes.
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.
How your actions work
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. Look at the feedback after the action.
See the idea in action
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. Keep the controls nearby.
One detail worth checking
A full board must obey every extra rule. Reveal supplies assistance; it is not an earned deduction. Take a moment to reassess the position before continuing. Read one step at a time and try it on the playing area. Match the instruction to the control you use.
Read these answers for extra help
For this browser game, 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.
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.
When I return, what example helps explain Killer Sudoku?
A two-cell cage labelled 3 holds 1 and 2; a one-cell cage fixes its own value.
For this browser game, what should I watch out for in Killer Sudoku?
A full board must obey every extra rule. Reveal supplies assistance; it is not an earned deduction.
While reading the Guide, what format does Killer Sudoku offer?
Keep this in mind: 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.
As a new player, 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.
