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16x16 Sudoku

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Sudoku
Choose your controls and enjoy a free round.
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Learn your way around 16x16 Sudoku

Open 16x16 Sudoku, check the instructions and begin a round. Fill all cells with 1–9 and A–G; do not repeat a symbol in any row, column or region. Check the relevant rule before repeating a move. Compare the starting position with the example in the Guide. Keep the game area visible while you use its controls.

A small practice goal

Watch the feedback after an action. A message can explain whether the input was accepted or whether a rule needs attention. Keep the objective visible.

The objective of a round

Fill all cells with 1–9 and A–G; do not repeat a symbol in any row, column or region. Read that aim before choosing your first action. Follow this game’s rules rather than another version’s.

The steps to play

  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.

Getting comfortable with the 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. Use the control method described here for this activity. Use one clear input at a time.

A useful example

On one puzzle in this collection, row 1, column 1 has D 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. Look for the relevant detail.

Pay attention to this rule

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

A few questions answered

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

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

For a quick reminder, 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.

When I return, what example helps explain 16x16 Sudoku?

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

When I return, 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 reading the Guide, what format does 16x16 Sudoku offer?

Play using the solo mode shown on this page. Read the controls before starting a new round.

For my first round, which play mode does 16x16 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.

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