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Solo · FREE PLAY

16x16 Sudoku

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Sudoku
Choose your controls and enjoy a free round.
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THE PLAYBOOK · SWEETTONG

How to play 16x16 Sudoku

Choose a round of 16x16 Sudoku and settle into its rules. Fill all cells with 1–9 and A–G; do not repeat a symbol in any row, column or region. Choose a clear next step rather than rushing through the instructions. Choose a comfortable screen position before beginning. Keep the game area visible while you use its controls.

Make the controls familiar

Locate the buttons and input area before beginning a long round. Use the on-screen labels to avoid an accidental restart. Notice the feedback after each input.

Your goal

Fill all cells with 1–9 and A–G; do not repeat a symbol in any row, column or region. Keep that objective in view throughout the round. Review the board or playing area as it changes.

Step by step

  1. Select an empty cell. The original clues cannot be edited.
  2. Choose a symbol from the number pad, or type it on a keyboard.
  3. Turn Notes on to record candidate symbols without committing an answer.
  4. Use Check entries to check your filled values. Hint reveals one value from the verified solution.
  5. Complete the board, or choose New puzzle for another board.

Controls

Tap or click a cell and use the number pad. Keyboard: arrows select cells; digits (and A–G on 16×16) enter values; Backspace erases. Read a button’s label before selecting it. Read the example below alongside these instructions.

A useful example

On one puzzle in this collection, row 1, column 4 has 9 in its solution. Read the clues on your current board before using that value; another puzzle can need a different entry. Use the example as a guide rather than a substitute for reading your board. Keep the controls nearby.

Watch out for this

Notes are reminders, not final entries. A full board only counts as complete when it satisfies every rule. A different version of the game may use a different rule. Locate the buttons and input area before beginning a long round. Use the on-screen labels to avoid an accidental restart.

Common questions

On this playing page, what is the goal of 16x16 Sudoku?

Fill all cells with 1–9 and A–G; do not repeat a symbol in any row, column or region.

For my first round, how do I control 16x16 Sudoku?

Here is the relevant explanation: Tap or click a cell and use the number pad. Keyboard: arrows select cells; digits (and A–G on 16×16) enter values; Backspace erases.

Before I begin, what example helps explain 16x16 Sudoku?

Here is the relevant explanation: On one puzzle in this collection, row 1, column 1 has 3 in its solution. Read the clues on your current board before using that value; another puzzle can need a different entry.

As a new player, what should I watch out for in 16x16 Sudoku?

Here is the relevant explanation: Notes are reminders, not final entries. A full board only counts as complete when it satisfies every rule.

While learning, what format does 16x16 Sudoku offer?

The key detail is this: Play using the solo mode shown on this page. Read the controls before starting a new round.

On this playing page, which play mode does 16x16 Sudoku use?

Here is the relevant explanation: The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.

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