Why practice my own mistakes instead of random puzzles?

Generic puzzle apps show random positions, often from master games. Chessdock shows you the exact positions where you went wrong. If you consistently miss knight forks in the middlegame, you’ll get puzzles specifically focused on that. It’s personalized training based on your actual weaknesses – not someone else’s.

How do you turn my games into puzzles?

Chessdock uses Stockfish, one of the world’s strongest chess engines, to find tactical and positional errors – from inaccuracies to blunders. When you make a move that loses material or gives your opponent a significant advantage, we capture that position and create a puzzle asking: “What should you have played instead?” You’re literally replaying your mistakes with a second chance to find the right move.

What counts as a mistake?

We use engine evaluation changes to identify mistakes. If a move gives your opponent an advantage, it can become a puzzle. We capture everything from minor inaccuracies to major blunders, so you can focus on the mistakes that matter most to your improvement.

Will I see patterns in my mistakes?

Yes. As you solve puzzles from your own games, recurring themes start to emerge. Because every puzzle comes from a position you actually played, the patterns you notice reflect your real weaknesses. That awareness makes it much easier to spot and avoid the same mistakes in future games.

Do puzzles get updated as I improve?

Yes. As you play new games, Chessdock analyzes them and creates fresh puzzles. It’s a living training tool that grows alongside your chess journey.

What if I already realized my mistake after the game?

That’s great – awareness is the first step. But knowing that a move was wrong is different from training yourself to avoid it next time. Solving the puzzle helps reinforce the correct pattern, so in future games you’re more likely to spot the tactic before making the mistake.

What if I don’t have many games yet?

No problem. Even 50–100 games usually produce dozens of useful puzzles. And as you play more games, we’ll keep creating new ones automatically.

Can I use both Chess.com and Lichess?

Yes. You can connect one or both platforms – it’s up to you.

How often do you analyze my games?

We check for new games all the time and automatically generate new puzzles as they appear. You don’t need to do anything – your training set stays fresh on its own.

Chessdock - Personalized chess training from your own games

You connect your Chess.com or Lichess account. Chessdock finds mistakes that mattered in your games. Then it's yours to work on – two ways:

Game reviews for every game you play

Replay the game through just its mistakes. Solve them, retry them, or simply see the better move. Position by position, as deep as you want.

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Puzzles from your own games

Your own mistakes, turned into puzzles to solve. No random positions. Every one comes from a game you actually played.

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also includes

iOS & Android apps Your games and puzzles, on the go

Fresh-game alerts Get notified minutes after you finish a game online

Analysis board Open the engine on any position you like

Bookmarks Save the games and puzzles worth revisiting

Game reviews

See your game through its mistakes

Only the important moves

Instead of scrolling the whole game, you get a short list of the moments that actually counted: your mistakes, and your opponent's too.

Each game has a story

Every game gets a one-line summary of how it went so you can tell which games deserve a closer look without replaying them.

Each mistake comes with context

Every mistake comes explained in plain words: whether it decided the game, how much of your winning chances it cost, and how much clock you spent on it.

See where the game shifted

A simple graph traces your winning chances rising and falling across the game, so you can spot the exact moment it slipped away – or came back.

Work each mistake your way

Feel like a challenge? Solve it blind, like a puzzle.
Want a hint? See the slip and look for a better move.
In a hurry? Just reveal the best move.

Go as deep as you like

Curious what would’ve happened? Open the engine on any position to see the best line and how your game really played out.
Try your own ideas and see where they lead. Just one click away.

Notification when a review is ready

You can jump straight into the review after finishing a game without having to check back.

Puzzles

Your mistakes, as personalized puzzles

Nothing random

Every puzzle comes straight from a game you played, so you only ever practice the mistakes you actually make.

Smart selection

Chessdock does its best to find the right mistake worth solving for you.

From every game you’ve played

Only on yearly plan A full library of puzzles, ready now. And it grows every time you play.

Two views of one game

Jump from any puzzle straight into the whole game in one click.

Try for free

Review one of your recent games and get a set of 5 puzzles.

Pricing for full version

Best value

Yearly

$59 $39 / year

Review of every new game
Apps with instant notifications
Puzzles from all reviewed games
Up to 10 000 past games reviewed after signup

Limited-time price

About $3.25 / month

Monthly

$5 / month

Review of every new game
Apps with instant notifications
Puzzles from all reviewed games
20 past games reviewed after signup

Choose monthly flexibility or the best-value yearly plan.
Try it on your own games before you spend a thing.

Common questions

How is this different from Chess.com’s Game Review?

Two things: price and effort. On Chess.com, unlimited Game Review is a premium feature that costs a lot more than Chessdock.

And instead of opening one game at a time and clicking through every move, Chessdock reviews every game you play automatically, takes you straight to the moves that mattered, and turns your mistakes into puzzles you can practice.

Do I need to be good at chess to benefit?

Not at all. Whether you’re rated 800 or 2000, you make mistakes worth learning from – and beginners often improve fastest, because fixing a few recurring slips goes a long way.

If you play chess, Chessdock works for you.

What if I don’t like Chessdock?

No problem. You get a free taste before paying anything, and if you go premium you’ve got 14 days for a full refund.

After that, cancel anytime – no lock-in.

Learn from every game you play