Opponent rating still confounds a chess history score
A leak that only appears against much weaker or much stronger pools is not the same as a leak in your usual games. Chessigma does not adjust for opponent rating — you still have to read the games.
Treat a score gap as a prompt to open those boards, not as proof the move is bad in general. A month of arena pairings can move a number without any new habit.
The product reports association, not cause
Chessigma asks whether a fork you repeat has scored differently from your usual move. It does not know if those games were all against 200-point underdogs.
If the sample is a rating spike or a themed arena, wait for a quieter month before you rewrite a repertoire.
Open the games before you swap a move
Two losses against titled players in the same Italian structure will look like a leak. They may just be a hard pool. Read the PGNs.
Frequently asked questions
Will Chessigma add opponent-rating filters?
Not in the current report. The honest move is to look at the games it named.
Should I ignore leaks from mixed pools?
Ignore thin samples. Do not ignore a fork that keeps showing up in your normal rated games.
Chessigma imports public Chess.com and Lichess history and reports repeated choices — not engine grades. Import your games · Methodology