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69ZUOWEN

RULES & PRACTICE

How to Play Sandwich Sudoku

Play Sandwich Sudoku ↗

Game guide · 69ZUOWEN

Making your first moves in Sandwich Sudoku

Open Sandwich Sudoku, check the instructions and begin a round. Solve the Sudoku while each outside clue gives the sum strictly between 1 and 9 in that row or column. Check the relevant rule before repeating a move. Choose a comfortable screen position before beginning. 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.

Something to practise

Choose one rule to keep in mind for this round. Apply it consistently rather than guessing what another version might allow. Make the next step deliberately.

What you are aiming for

Solve the Sudoku while each outside clue gives the sum strictly between 1 and 9 in that row or column. The feedback beside the game helps you follow the round. Try to explain the aim in your own words.

The playing sequence

  1. Select an editable cell.
  2. Enter a value using the keypad or keyboard; Notes stores candidates.
  3. Read the region, cage, arrow or outside clues alongside the normal constraints.
  4. Check entries verifies the completed board; Undo reverses your last input.
  5. 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. Read a button’s label before selecting it. Look at the feedback after the action.

Put the rules into context

If the values strictly between 1 and 9 are 2, 4 and 7, the sandwich clue is 13. Compare this with the rule that governs the move. Take a moment to compare.

A useful caution

A full board must obey every extra rule. Reveal supplies assistance; it is not an earned deduction. Compare the situation with the worked example. Choose one rule to keep in mind for this round. Apply it consistently rather than guessing what another version might allow.

Game-specific help

Before I begin, 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.

While reading the Guide, how do I control Sandwich Sudoku?

Keep this in mind: Click or tap cells and the digit pad. Use Notes, Undo and Reveal selected. Large boards scroll inside the game.

Before I begin, what example helps explain Sandwich Sudoku?

If the values strictly between 1 and 9 are 2, 4 and 7, the sandwich clue is 13.

On this playing page, 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.

When I return, what format does Sandwich 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.

Which play mode does Sandwich 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.

Where should I start with Sandwich Sudoku?

The key detail is this: Select an editable cell.

When I return, do I need an account or a payment for Sandwich Sudoku?

The key detail is this: No player account or payment is needed. Game scores are recreational results, not cash prizes.

Before I begin, how can I find Sandwich Sudoku again?

For clarity: Use the Games list or save this game page in your browser bookmarks. The Guide is linked from the playing page.

On this playing page, how do I report an issue with Sandwich 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.

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