Your own games are the best chess book you will ever own. They show exactly what you get wrong, in the openings you really play, against the players you really meet. But reviewing a game well takes more than pressing a button and reading a list of blunders. Here is a routine that takes about twenty minutes a game.
1. Write down what you thought, straight away
Right after the game, before any engine, note the moments that mattered to you: where you were unsure, where you spent a lot of time, where you felt the game turn. Write what you were afraid of and what you were planning.
This is the part no engine can give you. It shows how you think, and most mistakes come from how we think rather than from what we know: missing the opponent's threat, playing too fast, or fearing a move that was not dangerous.
2. Go through it yourself first
Play the game through on a board. At each moment you noted, look again with fresh eyes. Did you miss a capture? Was there a better plan? Try to find the improvements yourself before you check them. You will remember an idea you found far longer than one you were shown.
3. Then check with an engine
Now let an engine look at it. Use it to answer questions, not to replace them:
- Where did the evaluation change most? The big swings are the moments to study. A small loss in a quiet position matters less than a missed tactic.
- Why is the engine's move better? Play its line out until you understand the point. If you cannot see it after a few moves, move on; not every engine idea is a lesson for a human.
- Were your fears real? Often the move you avoided was fine.
4. Sort your mistakes
Give each real mistake a label. A few common kinds:
- Tactical: you missed a fork, a pin, or a capture.
- Threat blindness: you did not ask what your opponent's last move wanted.
- Plan: your moves were safe but went nowhere.
- Endgame technique: you reached a good ending and could not convert it.
- Clock: you spent too long early and rushed later.
After ten games, count the labels. That count tells you what to study next far better than any general advice.
5. Keep a few positions
From each game, keep one to three positions where a better move was there to find. Turn each into a question, such as "White to move: what did I miss?", and come back to it after a few days and again after a week.
Reviewing your games in GreyChess
GreyChess imports your games from Lichess and Chess.com by username, with no password, or from a PGN file. A review runs Stockfish 18 in your browser, on your own device, in three depths: Quick, Standard and Deep. It grades each move, from best move and good through inaccuracy, mistake and blunder, and shows each side's accuracy, also by opening, middlegame and endgame, with an evaluation bar and chart beside the board.
The mistakes from a reviewed game become flashcards, named after the game and the move, so the positions you got wrong come back for you to solve again. Do steps 1 and 2 before you open the review, and it will mean far more.
How often to review
You do not need to review every game in depth. A good habit:
- Every serious game: the full routine.
- Fast games: a quick look at the biggest swing only.
- Every month: a look at your labels, to choose what to study next.
A player who reviews ten games honestly will often improve more than one who plays a hundred and reviews none.