THE PLAYBOOK · IHAHOOO
How to play Sandwich Sudoku
Read the aim of Sandwich Sudoku, then make your first move. Solve the Sudoku while each outside clue gives the sum strictly between 1 and 9 in that row or column. Use the example below to understand a decision. Keep the instructions close while learning this activity. Check the relevant rule before repeating a move.
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.
Build a steady rhythm
Take enough time to read a new position. If a game has a timer, learn its controls first rather than searching for them during the round. 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. Keep that objective in view throughout the round. Take a moment to understand the current position.
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. Keep the playing area visible while using these controls. A new-round button replaces the current round.
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. Notice the change in the playing area.
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?
Solve the Sudoku while each outside clue gives the sum strictly between 1 and 9 in that row or column.
For my first round, how do I control Sandwich Sudoku?
For clarity: Click or tap cells and the digit pad. Use Notes, Undo and Reveal selected. Large boards scroll inside the game.
For my first round, what example helps explain Sandwich Sudoku?
Here is the relevant explanation: If the values strictly between 1 and 9 are 2, 4 and 7, the sandwich clue is 13.
What should I watch out for in Sandwich Sudoku?
A full board must obey every extra rule. Reveal supplies assistance; it is not an earned deduction.
For this browser game, what format does Sandwich Sudoku offer?
For clarity: 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.
On this playing page, 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.