Play Free Mini Sudoku Online - 4x4 Logic Puzzle

How to Play Mini Sudoku

1. Objective: Fill the 4x4 grid with numbers 1-4 so that each row, column, and 2x2 box contains all four digits exactly once.
2. Gameplay: Click an empty cell to select it, then click a number from the palette to place it.
3. Controls: Use Undo to revert your last move or Erase to clear a selected cell.
4. Winning: When all cells are correctly filled, you've solved the puzzle! Use Check to validate your solution.

Strategy & Tips

• Start with Obvious Numbers: Look for rows, columns, or 2x2 boxes that already have numbers filled in. These are easier to complete.
• Use Process of Elimination: If a row already has 1, 2, and 3, the remaining cell must be 4.
• Check All Constraints: Remember each number must appear once in each row, column, AND 2x2 box.

Frequently Asked Questions

What's the difference between Mini Sudoku and regular Sudoku?

Mini Sudoku uses a 4x4 grid with numbers 1-4 and 2x2 boxes, making it perfect for beginners. Regular Sudoku uses a 9x9 grid with numbers 1-9 and 3x3 boxes.

How long does a Mini Sudoku puzzle take?

Mini Sudoku puzzles are much quicker than regular Sudoku - typically 1-3 minutes for most players, making them perfect for a quick brain workout!

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