How to analyze your chess games (and actually improve)

A practical routine for reviewing your own chess games with an engine: what to look at first, what to ignore, and how to turn mistakes into lessons.

Playing more games is the obvious way to get better at chess, but most of the improvement happens after the game. A short, honest review turns a loss into a lesson and a win into a pattern you can repeat. This guide gives you a routine that takes ten to fifteen minutes per game and works at every level.

1. Review without the engine first

Before you switch on Stockfish, play through the game yourself. Ask three questions: where did I feel uncomfortable, where did I spend a long time, and where did the evaluation of the game change in my head? Write down one or two moments. This matters because an engine shows you what was best, but only you know why you chose something else — and that reason is what you need to fix.

2. Run the engine review

Import the game (a PGN file, pasted text, or your username on a chess site) and run a full review. ChessAnalyzer uses Stockfish 18, one of the strongest chess engines, and rates every move from Brilliant to Blunder. Start with the summary: the accuracy of both players and the critical moments — the few moves where the game really changed hands.

3. Study the critical moments, not every move

A typical game has two to five moments that decided it. Jump to each one and compare your move with the engine's choice. Then ask the most useful question in chess improvement: what would I have needed to see to find the better move? Usually the answer is one of a small set of ideas — a tactic you missed, a piece you left undefended, a plan you didn't have, or simply moving too fast.

4. Check your own moments against the engine

Now compare the engine's critical moments with the notes you made in step 1. If they match, your judgement is sound and you just need more calculation. If they don't — you felt fine while the evaluation collapsed — you have found a blind spot, and that is the most valuable thing a review can show you.

5. Turn the lesson into practice

A mistake is only useful if it changes your next game. If you missed a fork, solve a few fork puzzles. If you were lost by move twelve, study the opening you played. Keep a short list of your recurring errors; after ten games the pattern becomes obvious.

What to ignore

• Small evaluation changes. A move that loses a tenth of a pawn is not worth your time; focus on the big swings.
• Engine moves you could never find. If the best move needs a twenty-move calculation, note it and move on.
• Your opponent's mistakes — unless you missed the chance to punish them. Those are listed as Miss, and they are worth studying.

A ten-minute routine

1. Play through the game alone and mark one or two moments.
2. Run the review and read the summary.
3. Study each critical moment and write one sentence about what you missed.
4. Pick one exercise for the week: an opening line or a tactic theme.

Do this after every serious game and you will improve faster than by playing twice as many games without looking back. Open the analyzer to review your latest game now.