How to Play Sandwich Sudoku

THE PLAYBOOK · AWTKANAPOLI

How to play Sandwich Sudoku

Take a moment with Sandwich Sudoku before moving to another game. Solve the Sudoku while each outside clue gives the sum strictly between 1 and 9 in that row or column. Choose a clear next step rather than rushing through the instructions. Make your first input carefully and watch the result. Choose a clear next step rather than rushing through the instructions.

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.

Keep the aim in sight

Keep the stated aim separate from side details such as animation or appearance. Progress is measured by the game’s own completion or scoring rules. Make the next step deliberately.

Your goal

Solve the Sudoku while each outside clue gives the sum strictly between 1 and 9 in that row or column. Use the instructions to see which actions move you towards it. Notice how the game responds to your input.

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. Keep the playing area visible while using these controls. Use the visible help when you are unsure of the next input.

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. Compare the situation with the worked example. Compare the worked example with your own position. Use the reasoning, not an answer copied from a different board.

Common questions