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Solo · FREE PLAY

Sandwich Sudoku

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Sudoku
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How to play Sandwich Sudoku

Make Sandwich Sudoku your next activity in the game library. 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. Use the example below to understand a decision.

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.

Read before acting

Read one step at a time and try it on the playing area. Match the instruction to the control you use. Notice the feedback after each input.

Your goal

Solve the Sudoku while each outside clue gives the sum strictly between 1 and 9 in that row or column. An attractive position is not enough unless the goal is met. Follow this game’s rules rather than another version’s.

Step by step

  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. On a smaller screen, keep the active part of the board within view. Look at the feedback after the action.

A useful example

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. Choose a deliberate next step.

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

Common questions

Before I begin, what is the goal of Sandwich Sudoku?

For clarity: 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?

Here is the relevant explanation: Click or tap cells and the digit pad. Use Notes, Undo and Reveal selected. Large boards scroll inside the game.

While reading the Guide, what example helps explain Sandwich Sudoku?

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

For my first round, what should I watch out for in Sandwich Sudoku?

The key detail is this: A full board must obey every extra rule. Reveal supplies assistance; it is not an earned deduction.

While learning, 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.

While learning, 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.

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