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Your guide to 6x6 Sudoku

A focus for your next round

After a move, check what changed. Decide which rule explains the new state before acting again. Use the example to check your reasoning.

What counts as success

Fill all cells with 1–6; do not repeat a symbol in any row, column or region. The feedback beside the game helps you follow the round. The example below illustrates a decision.

Work through the instructions

  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. Use the control method described here for this activity. Read the example below alongside these instructions.

One way to understand the rules

Before filling a cell, compare the symbols already used in its row, column and 2 × 3 region. A candidate must be absent from all three. Your next round may have a different position, so inspect it before acting. Notice the change in the playing area.

Pay attention to this rule

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. After a move, check what changed. Decide which rule explains the new state before acting again.

Read these answers for extra help

On this playing page, what is the goal of 6x6 Sudoku?

Fill all cells with 1–6; do not repeat a symbol in any row, column or region.

For a quick reminder, how do I control 6x6 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.

What example helps explain 6x6 Sudoku?

Here is the relevant explanation: Before filling a cell, compare the symbols already used in its row, column and 2 × 3 region. A candidate must be absent from all three.

Before I begin, what should I watch out for in 6x6 Sudoku?

For clarity: 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 6x6 Sudoku offer?

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

While reading the Guide, which play mode does 6x6 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.

For this browser game, where should I start with 6x6 Sudoku?

Keep this in mind: Select an empty cell. The original clues cannot be edited.

When I return, do I need an account or a payment for 6x6 Sudoku?

No player account or payment is needed. Game scores are recreational results, not cash prizes.

How can I find 6x6 Sudoku again?

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

For my first round, how do I report an issue with 6x6 Sudoku?

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.