How to Play 4x4 Sudoku

THE PLAYBOOK · EEQUN

How to play 4x4 Sudoku

Open 4x4 Sudoku, check the instructions and begin a round. Fill all cells with 1–4; do not repeat a symbol in any row, column or region. Use the example below to understand a decision. Treat the first round as a chance to learn the controls. Look at what changes after your first action.

Try a deliberate move

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

Your goal

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. Keep the controls in easy reach.

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. On a smaller screen, keep the active part of the board within view. Read the example below alongside these instructions.

A useful example

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. Focus on why the action is allowed, not only its outcome. Keep the game’s format in mind.

Watch out for this

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. 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.

Common questions