Switching openings mid-month breaks the sample
Two weeks of London and two weeks of Jobava is not a repertoire. It is a small sample of two systems. A DNA card will pick a winner from noise.
Give an opening a block of rated games before you ask the report to judge it. Chessigma cannot separate a new idea from a bad week if you keep changing the first move.
Date-range the import
If you switched on the 15th, look at games after the 15th. Mixing April’s Italian into May’s Scotch is how you get a fake leak.
One change at a time
Change colour, time control, or first move — not all three. Otherwise you will not know which lever moved the score.
Frequently asked questions
How many games is a block?
Enough that one weekend arena cannot swing the percent. For most club players that is dozens, not five.
What if I got bored?
Boredom is allowed. Just do not treat the mixed month as a verdict on either opening.
Chessigma imports public Chess.com and Lichess history and reports repeated choices — not engine grades. Import your games · Methodology