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Getting started with 4x4 Sudoku

Bring this focus to a round

Read one step at a time and try it on the playing area. Match the instruction to the control you use. Notice the feedback after each input.

The purpose of your moves

Fill all cells with 1–4; do not repeat a symbol in any row, column or region. Keep that objective in view throughout the round. Check the rules when you are unsure.

Start here and follow along

  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.

How to interact with the game

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. Check any mode label before starting.

See the idea in action

On one puzzle in this collection, row 1, column 2 has 2 in its solution. Read the clues on your current board before using that value; another puzzle can need a different entry. Apply the same reasoning to the position in your own round. Read the matching step again.

Keep this in mind

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. When a decision goes wrong, compare it with the common mistake described below. Start again only when you intend to leave the current round.

If you are unsure

While reading the Guide, what is the goal of 4x4 Sudoku?

Fill all cells with 1–4; do not repeat a symbol in any row, column or region.

For my first round, how do I control 4x4 Sudoku?

The key detail is this: 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.

On this playing page, what example helps explain 4x4 Sudoku?

On one puzzle in this collection, row 1, column 2 has 2 in its solution. Read the clues on your current board before using that value; another puzzle can need a different entry.

Before I begin, what should I watch out for in 4x4 Sudoku?

Keep this in mind: Notes are reminders, not final entries. A full board only counts as complete when it satisfies every rule.

On this playing page, what format does 4x4 Sudoku offer?

Here is the relevant explanation: Play using the solo mode shown on this page. Read the controls before starting a new round.

While learning, which play mode does 4x4 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.

For my first round, where should I start with 4x4 Sudoku?

Select an empty cell. The original clues cannot be edited.

For a quick reminder, do I need an account or a payment for 4x4 Sudoku?

The key detail is this: No player account or payment is needed. Game scores are recreational results, not cash prizes.

When I return, how can I find 4x4 Sudoku again?

Keep this in mind: Use the Games list or save this game page in your browser bookmarks. The Guide is linked from the playing page.

For a quick reminder, how do I report an issue with 4x4 Sudoku?

Here is the relevant explanation: Use the contact form and include the game name, browser, device and the actions that led to the issue. Do not send passwords or payment details.