Sandwich Sudoku

THE PLAYBOOK · PT-BUS

How to play Sandwich Sudoku

Sandwich Sudoku on PT-BUS is organised around a clear objective: Solve the Sudoku while each outside clue gives the sum strictly between 1 and 9 in that row or column. Begin with first-round orientation and use the playbook beside the game.

8 finite checked puzzles, with local saved progress. No claim of unlimited daily puzzles or calibrated difficulty.

First-round orientation

Before playing, identify the objective and the input controls. Use your first round to learn what changes after a valid action.

Your goal

Solve the Sudoku while each outside clue gives the sum strictly between 1 and 9 in that row or column.

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.

A useful example

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

Watch out for this

A full board must obey every extra rule. Reveal supplies assistance; it is not an earned deduction.

Common questions