Sandwich Sudoku

THE PLAYBOOK · XH0411

How to play Sandwich Sudoku

For Sandwich Sudoku, XH0411 puts the actual rules alongside the playable board or activity. Solve the Sudoku while each outside clue gives the sum strictly between 1 and 9 in that row or column. The suggested practice focus is one decision at a time.

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

One decision at a time

Focus on the next valid action. After taking it, check how the position or game state changed before making another choice.

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