How to start solving a Sudoku puzzle

Learn how to start solving a Sudoku puzzle with easy steps and tips for beginners. Master logic and boost your skills one move at a time!

Start solving Sudoku by observing the given numbers and using the process of elimination to fill in the correct ones.
Start solving Sudoku by observing the given numbers and using the process of elimination to fill in the correct ones.

A quick introduction to Sudoku

Sudoku is a popular logic-based puzzle game that’s simple in rules but challenging in execution. Whether you’re just starting out or have been playing for years, knowing how to begin solving a Sudoku puzzle properly can save time and increase your chances of success.

Basic rules of Sudoku

Before diving in, it’s important to understand the rules:

  • Sudoku is played on a 9×9 grid, divided into nine 3×3 regions.
  • The goal is to fill in the numbers from 1 to 9 so that:
    • Each row contains all numbers from 1 to 9, with no repeats.
    • Each column contains all numbers from 1 to 9, with no repeats.
    • Each 3×3 box contains all numbers from 1 to 9, with no repeats.

How to start solving Sudoku for beginners

Step 1: Look for the given numbers

Start by scanning the entire puzzle. The numbers already provided are your clues — use them to begin solving the rest.

Step 2: Focus on rows, columns, or boxes with the most numbers

Rows, columns, or 3×3 boxes that are more filled will be easier to work with. Start in these areas to find the missing numbers.

Step 3: Use the process of elimination

For each empty cell, consider which numbers cannot go there, based on what’s already in the same row, column, and box. This helps narrow down the possible choices.

Step 4: Look for cells with only one possible number

These are often called “naked singles” — if a cell has only one valid number left, fill it in right away.

Step 5: Repeat the cycle – scan → think → fill

Continue this process. As more cells get filled in, you’ll gain more clues for solving the rest of the puzzle.

Extra tips for solving Sudoku more effectively

Don’t guess randomly: Sudoku should be solved with logic, not guesswork. If you’re guessing, you may have missed something.

Use a pencil or “note” mode (if playing online): Writing down possible numbers in a cell helps you eliminate options more easily later on.

Stay focused and patient: Sudoku is a great way to improve concentration. Take your time and solve it step by step.

 

Knowing how to start is the key to solving Sudoku puzzles quickly and accurately. Practice daily to sharpen your observation and logical thinking skills. You can begin with easier levels on Sudoku to get familiar with the game and gradually move up to more challenging ones!