THE PLAYBOOK · SLTPPF
How to play Sandwich Sudoku
This SLTPPF page combines Sandwich Sudoku with a guide to the decisions it asks you to make. Solve the Sudoku while each outside clue gives the sum strictly between 1 and 9 in that row or column. Use example-led learning to give your round a clear purpose.
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.
Example-led learning
Read the worked example, identify its key decision, then look for a comparable decision while you play.
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
- Select an editable cell.
- Enter a value using the keypad or keyboard; Notes stores candidates.
- Read the region, cage, arrow or outside clues alongside the normal constraints.
- Check entries verifies the completed board; Undo reverses your last input.
- 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
What completes a round?
Solve the Sudoku while each outside clue gives the sum strictly between 1 and 9 in that row or column.
Which controls should I use?
Click or tap cells and the digit pad. Use Notes, Undo and Reveal selected. Large boards scroll inside the game.
What can I play here?
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.
Does play involve an account or cash?
No. Play is free, without registration, deposits, bets or cash prizes.
