Why Am I Not Getting Better at Sudoku? How to Make Your Practice Count

You solve Sudoku regularly, but you still get stuck in familiar places. Harder puzzles feel just as difficult as before, and you keep wondering what you’re missing.

It can be frustrating to practice without seeing the progress you expected. Before deciding you’ve reached your limit, though, take a closer look at how you practice.

Finishing a puzzle gives you experience. Understanding what helped you solve it—or what stopped you—gives you something specific to build on.

Why Playing More Sudoku May Not Be Enough

When you approach every puzzle the same way, you may keep repeating the same habits. Some help you progress. Others leave you overlooking simple moves or applying techniques without checking whether their conditions are satisfied.

For example, you might scan the grid repeatedly without changing your focus. Or you might recognize part of an intermediate pattern and eliminate a possibility before checking the complete pattern.

Give your next practice session a clearer purpose by asking:

• Where did I stop making progress?
• What did I try at that point?
• Could I explain the reasoning behind each move?
• What should I check more carefully next time?

You don’t need to record every number you place. One useful observation can help you decide what to work on next.

Goal #1: Return to the Basics When You Get Stuck

Getting stuck doesn’t automatically mean you need a more advanced technique. Sometimes you’ve missed a basic opportunity in a row, column, or box.

Before searching for a complicated pattern, deliberately review the information already on the board.

For an example of building useful information before applying advanced techniques, see how to start a hard Sudoku puzzle.

Step #1: Check What Changed After Your Last Placement

Each number you place affects the possibilities in cells sharing its row, column, and box.

Review those areas. Does the placement eliminate a possibility elsewhere? Does it leave a cell with only one possible number, or a number with only one possible location in a unit?

Following the effects of a placement can help you find opportunities you might miss by immediately jumping to another part of the grid.

Step #2: Change Your Focus

If you’ve been concentrating on boxes, examine rows and columns. If you’ve been staring at one section, inspect another.

Changing your focus gives you another way to examine the same information. A restriction that was difficult to notice from one viewpoint may become clearer from another.

Step #3: Check Every Step of a Technique

Recognizing something that resembles a pattern is only the beginning. Before using it, check every condition the technique requires.

If you’re unsure, revisit the lesson and work through an example. Understanding why an elimination is valid matters more than remembering the technique’s name.

Goal #2: Make Your Pencil Marks Useful

Pencil marking can feel slow, which makes it tempting to rush or skip it.

Useful pencil marks help you track possibilities and recognize relationships between cells. But outdated or inconsistent marks can make the puzzle harder to interpret.

Sudoku Professor’s article on whether you should pencil mark your Sudoku puzzles explores this topic in more detail.

Step #1: Follow a Consistent Method

Use the pencil-marking method you’re learning, and understand what each mark represents. Different methods record different information, so mixing them without a clear system can create confusion.

After placing a number, review the affected marks and update them as needed.

The goal is to keep reliable information visible so you can reason from it accurately.

Step #2: Understand the Move Before Chasing Speed

When practicing an unfamiliar technique, give yourself time to apply it carefully.

Ask why a number remains possible or why you can eliminate it. If you can explain the reason, you’re developing an understanding you can apply to other puzzles.

You can work on speed later. During learning, focus on accurate decisions and clear reasoning.

Goal #3: Learn From Mistakes Before Starting Over

When a puzzle goes wrong, erasing everything immediately can mean losing the chance to understand what happened.

If you can, pause and investigate the problem first.

Step #1: Look for a Move You Can’t Justify

A repeated number or a cell with no valid possibilities indicates a problem. However, the original mistake may have happened several moves earlier.

Review your recent placements and eliminations. Look for a step you can’t explain confidently.

Did you overlook a number in the column? Forget to update a pencil mark? Apply a technique without checking all its conditions?

Identifying the cause gives you something specific to improve.

Step #2: Turn the Mistake Into a Practice Goal

Use what you discovered to choose one adjustment for your next puzzle.

• If you overlooked a number in a column, check the full column before confirming a placement.
• If outdated pencil marks caused confusion, review affected marks after each placement.
• If you misapplied a technique, revisit its explanation and practice on a suitable example.

You don’t have to correct every habit at once. Begin with one you can identify and work on deliberately.

Goal #4: Give Each Practice Session a Purpose

“Get better at Sudoku” is a worthwhile goal, but it doesn’t tell you what to do during your next puzzle.

A smaller goal makes your practice easier to evaluate.

Step #1: Choose One Skill to Work On

Pick something you can observe, such as:

• Following a consistent scanning process.
• Keeping pencil marks accurate.
• Checking every condition of one technique.
• Explaining each placement before writing it in.
• Reviewing a stuck point before seeking help.

You’ll still use other skills while solving. Your chosen skill simply gives the session a focus.

Step #2: Choose Puzzles That Support Your Learning

If a puzzle repeatedly leaves you unable to understand the next step, you may need guidance to learn from it.

Choose puzzles that let you use familiar methods while practicing something less familiar. When you need help, study the reasoning in a walkthrough, then look for an opportunity to apply that reasoning yourself.

For structured instruction, explore the Sudoku Professor courses and their available lessons and practice resources.

Step #3: Participate Actively in Walkthroughs

Pause a video before the next move is revealed and inspect the puzzle yourself.

If you don’t find the move, watch the explanation and identify what you missed. Was it a restriction you overlooked, a pattern you didn’t recognize, or a step you didn’t understand?

Your answer helps you decide what to practice next.

Goal #5: Notice Progress Beyond Your Finishing Time

Solving time doesn’t capture everything you’re learning. Different puzzles present different challenges, and practicing an unfamiliar technique may slow you down.

Other useful signs of progress include:

• Explaining placements that previously confused you.
• Recognizing when a technique’s conditions aren’t satisfied.
• Catching an error before it affects more of the puzzle.
• Spotting a familiar pattern without checking the lesson.
• Approaching a stuck point with a clear process.

These observations can tell you more than comparing the finishing times of two different puzzles.

Try This Routine in Your Next Practice Session

A simple routine can help you put these ideas into action.

Step #1: Before You Begin

Choose one specific skill to practice.

For example: “Today, I’ll review the affected pencil marks after every placement.”

Step #2: While You Solve

Apply your methods carefully. When you get stuck, review the basics, change your focus, and check the conditions of any technique you’re considering.

If you use a hint or walkthrough, make sure you understand the reasoning behind the next move before continuing.

If repeated scanning isn’t revealing another move, read when the One-Thru-Nines doesn’t work for guidance on what to consider next.

Step #3: When You Finish or Stop

Write down one thing you learned and one thing to revisit.

Perhaps you missed an opportunity in a column, misunderstood a pattern, or successfully applied a technique without help.

Use that observation to choose the focus of your next session.

Keep Giving Yourself Something to Learn

If you feel stuck at the same level, examine your process before deciding you can’t improve.

Return to the basics, keep your pencil marks useful, and take time to understand mistakes. Choose a manageable skill to practice and notice when your reasoning becomes clearer.

You don’t have to finish every puzzle to learn from it. Each session can reveal what you understand and what needs more attention.

Visit Sudoku Professor for lessons and resources to help you work on your next solving goal.