How to Analyze Your Chess Games: Complete Guide 2025

November 10, 20258 min read

Why Analyze Your Chess Games?

Analyzing your chess games is one of the most effective ways to improve. While playing more games helps you gain experience, reviewing those games helps you understand your weaknesses and learn from your mistakes.

Professional chess players spend hours analyzing their games, and with modern tools like chess.koz.tv, you can do the same for free.

Step 1: Import Your Games

The first step is getting your games into an analysis tool. With chess.koz.tv, you have three options:

From Chess.com

Simply enter your Chess.com username on the homepage. We'll automatically fetch your recent games and prepare them for analysis.

From Lichess

Switch to the Lichess tab and enter your username. Your games will be imported directly.

From PGN Files

If you have games stored as PGN files (from tournaments, other platforms, or OTB games), you can upload them directly.

Step 2: Run Engine Analysis

Once your games are imported, click on any game to open the analysis board. The analysis happens automatically on our servers using Stockfish 17 - the strongest chess engine available.

What the Engine Shows You

  • Evaluation bar: Shows who's winning and by how much
  • Best moves: The top 3 moves in each position
  • Move classifications: Each move is labeled as brilliant, great, best, good, inaccuracy, mistake, or blunder
  • Centipawn loss: How much advantage you lost with each move

Step 3: Identify Critical Moments

Focus on these key areas when reviewing:

Opening Mistakes

Did you deviate from theory too early? Did you fall into a trap? The opening detection feature shows you which opening was played and where you left book moves.

Tactical Blunders

Look for moves marked as blunders (??). These are positions where you missed something important - a tactic, a threat, or a winning continuation.

Positional Errors

Sometimes moves aren't tactical blunders but strategic mistakes. These often show as inaccuracies that slowly deteriorate your position.

Step 4: Learn the Correct Moves

For each mistake, study the engine's suggestion:

  1. Understand why your move was wrong - What did you miss?
  2. Understand why the engine move is better - What does it accomplish?
  3. Look for patterns - Do you make similar mistakes often?

Step 5: Use Batch Analysis

If you want to find patterns across multiple games, use the Batch Analysis feature. It analyzes your recent games and shows you:

  • Common mistake types
  • Problematic openings
  • Accuracy trends over time
  • Phase-specific weaknesses (opening, middlegame, endgame)

Tips for Effective Analysis

Don't Rush

Take your time with each game. It's better to thoroughly analyze one game than to quickly skim through ten.

Focus on Your Moves

While it's interesting to see your opponent's mistakes, focus primarily on your own moves. You can control your play, not theirs.

Write Down Insights

Keep notes about patterns you notice. "I often miss knight forks" or "I struggle in rook endgames" are valuable insights for targeted practice.

Review Critical Moments Multiple Times

For important mistakes, try to understand not just the correct move but the whole concept behind it.

Common Analysis Mistakes to Avoid

  1. Only looking at blunders - Inaccuracies matter too and often reveal deeper understanding gaps
  2. Blindly memorizing engine moves - Understand the ideas, not just the moves
  3. Skipping won games - You make mistakes in games you win too
  4. Analyzing when tired - Analysis requires focus; do it when you're fresh

Conclusion

Regular game analysis is the key to chess improvement. With free tools like chess.koz.tv, there's no excuse not to review your games. Start with your most recent loss, understand what went wrong, and you're already on your way to becoming a stronger player.

Ready to start? Import your games now and begin your analysis journey.

Ready to Put This Into Practice?

Analyze your games for free with Stockfish 17 - no signup required.

Start Analyzing Your Games