THE PLAYBOOK · ACSIWANG
How to play Sandwich Sudoku
Try Sandwich Sudoku at your own pace and keep its objective in view. Solve the Sudoku while each outside clue gives the sum strictly between 1 and 9 in that row or column. Keep the game area visible while you use its controls. Treat the first round as a chance to learn the controls. Check the relevant rule before repeating a move.
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 careful first round
Before your first action, say what you are trying to achieve. Then compare the result with the goal. Use the example to check your reasoning.
Your goal
Solve the Sudoku while each outside clue gives the sum strictly between 1 and 9 in that row or column. Keep that objective in view throughout the round. Try to explain the aim in your own words.
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. Keep the playing area visible while using these controls. Make sure you are interacting with the game rather than the surrounding page.
A useful example
If the values strictly between 1 and 9 are 2, 4 and 7, the sandwich clue is 13. Your next round may have a different position, so inspect it before acting. Verify the rule before continuing.
Watch out for this
A full board must obey every extra rule. Reveal supplies assistance; it is not an earned deduction. Check the rule before repeating the action. Compare the worked example with your own position. Use the reasoning, not an answer copied from a different board.
Common questions
For my first round, what is the goal of Sandwich Sudoku?
Solve the Sudoku while each outside clue gives the sum strictly between 1 and 9 in that row or column.
Before I begin, how do I control Sandwich Sudoku?
The key detail is this: 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 Sandwich Sudoku?
Here is the relevant explanation: If the values strictly between 1 and 9 are 2, 4 and 7, the sandwich clue is 13.
For this browser game, what should I watch out for in Sandwich Sudoku?
For clarity: A full board must obey every extra rule. Reveal supplies assistance; it is not an earned deduction.
What format does Sandwich 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.
When I return, which play mode does Sandwich 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.
