When to re-import your chess history
A stale import makes last season’s repertoire look like this month’s. Re-import after a rating jump, a new time control, or a month you did not recognise.
The saved file is a snapshot. Chessigma’s 200-game cap is there so the newest games stay the ones you train on. Refresh when the person in the file is no longer you.
Triggers that matter
A 150-point swing, a switch from blitz to rapid, or a month off will move your baseline. Comparing January you to September you is how you “fix” a line you already abandoned.
A quiet month of the same time control does not need a new file. Let the sample grow.
Do not hoard every game
Importing your entire lifetime PGN feels complete and hides the current tree. Prefer the last few months in the control you actually play.
Frequently asked questions
Will I lose the old report?
You will replace the corpus. If a finding mattered, write the fork down before you refresh.
How often is too often?
Weekly re-imports on a thin sample just jitter the silence. Wait until you have another few dozen games.
Chessigma imports public Chess.com and Lichess history and reports repeated choices — not engine grades. Import your games · Methodology