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Logic puzzle · Number grid

Sudoku,
one number, one place.

Nine by nine. Each row, column and box holds 1–9 once.

Time
00:00
Mistakes
0
Hints
0
About the game

How Sudoku works,
in short.

  1. Step 01
    5
    7
    3
    8
    4
    6
    9
    1
    3
    7
    5
    2

    Start with the givens.

    A 9×9 grid arrives with some digits filled. Your job is to complete every blank with 1–9 — click or tap a cell, then type the digit.

  2. Step 02
    4
    1
    9

    Each row, column, and box.

    Every digit must appear exactly once in every row, every column, and every 3×3 box. Mark conflicts as you go.

  3. Step 03
    5
    3
    4
    6
    7
    8
    9
    1
    2
    6
    7
    2
    1
    9
    5
    3
    4
    8
    1
    9
    8
    3
    4
    2
    5
    6
    7
    8
    5
    9
    7
    6
    1
    4
    2
    3
    4
    2
    6
    8
    5
    3
    7
    9
    1
    7
    1
    3
    9
    2
    4
    8
    5
    6
    9
    6
    1
    5
    3
    7
    2
    8
    4
    2
    8
    7
    4
    1
    9
    6
    3
    5
    3
    4
    5
    2
    8
    6
    1
    7
    9

    Solve cell by cell.

    Find a cell that can only hold one digit. Place it. Keep going. The grid resolves itself in steps.

Questions

Sudoku questions, answered.

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