First — the position you missed
- The exact position from your game, one move before it turned
- Same side to move, same position you were actually looking at
- Afterwards: your move, the stronger move, and the line that follows
- Shows you what you missed
Personalized training
Train the Positions That Keep Costing You Games
Free personalized puzzles built from your own games. Start with the exact positions where things went wrong, then practise related positions to make sure the idea survives on a different board.
Free personalized puzzles Unlimited · No card required
- No Chess.com or Lichess password — a public username is all it needs.
- The learning platform is free — AI Move Explanation and Meta-Coach are an optional membership.
- Every recommendation comes from your own games and Stockfish analysis.
- Left: the exact position from your game, one move before the evaluation turned.
- Same decision, different board →
- Right: a position you have never seen, chosen because it invites the same candidate moves.
Two Stages, in That Order
Then — a board you have never seen
- A different position that asks for a related decision
- A published puzzle inviting the same candidate moves
- Motif and match stay hidden until you have answered
- Shows whether you can find the idea cold
A puzzle taken from your own game is unusually good at diagnosis. You recognize the position, you remember what you were thinking, and the gap between what you played and what was available is concrete.
That is also why it stops being useful the second time round: you are no longer solving the position, you are remembering the answer. The second position asks for the same idea on a board you have never seen, so finding it there means you have understood the idea rather than memorised one position.
What an Exercise Looks Like
- The badge says which of the two stages this is.
- The motif and the position it was matched to stay hidden until you have answered — seeing them first would tell you what to look for.
Where a Session Comes From
Three sources, each keeping its own counts: what is due, what is mastered, and how often you get it right first time.
- Repertoire recall, similar patterns, and the exact positions you missed — kept separate so a session is not all one thing.
How the Related Positions Are Chosen
A related puzzle is one that asks for the same decision you got wrong — not just one carrying the same tactical label.
By the moves it invites
Two positions count as similar when they invite the same candidate moves, not when they look alike. That is what makes the second position a real test rather than a lookalike.
Same side to move
Always. A tactic you have to find as Black is a different exercise from the same idea with the colours reversed, so the two are never swapped for each other.
Difficulty relative to you
Puzzles are picked to sit near your own puzzle rating, which moves as you solve. Phase and motif are varied too, so a session does not turn into six forks in a row.
Frequently Asked Questions
What is the difference between the two stages?
Puzzles from your games rebuild an exact position you reached, immediately before a move that turned the game, and show your move against the stronger one afterwards. Similar-position puzzles are high-quality published puzzles selected because they invite the same candidate moves as positions you commonly reach. The first diagnoses; the second tests whether the idea transfers.
Is personalized puzzle training free?
Yes. Building puzzle sets from your games and solving them is free, with no cap on how many you make. You will need a free account so your puzzles and progress have somewhere to live — that is a login, not a payment. The only paid parts of ChessLogix are AI Move Explanation and Meta-Coach.
Which games can puzzles be built from?
Any game in your library — imported from Chess.com or Lichess, or uploaded as a PGN. You can filter the scan by account, time control and result before it runs.
Are the similar puzzles just tag matches?
No, and that is the point. Two positions can share a tactical tag and still ask for completely different thinking. ChessLogix compares positions by the moves a human player would seriously consider in each one, so a match is a position where you face the same choice — always with the same side to move, and at a difficulty close to your own.
How do I know the training is working?
Two things are visible. Inside training, how often you solve and how much of a group you have mastered. In your real games, whether the habit the puzzles target turns up less often once you import new games. The second one is what actually counts, and you can see it rather than having to take it on trust.
Should I stop doing regular puzzles?
No. General sets are good for broad exposure to motifs; personalized sets are for the specific decisions your games show going wrong. They answer different questions and most players benefit from both.
Turn Your Last Batch of Games Into a Puzzle Set
Import your games, run the scan, and start with the positions that actually cost you points. Building and solving puzzles from your own games is free, with no limit on how many sets you make.