Where do I win more games?
Use your imported Chess.com and Lichess history to compare results over the same period. A combined total answers how much you played; a platform-specific view helps explain where those results came from.
Compare like with like
- Choose a common date range and timezone.
- Use the same time control, such as blitz on both platforms.
- Check that each account's import covers the period.
- Look at games played as well as the win percentage.
For example, 8 wins in 10 games and 80 wins in 100 games both equal an 80% win rate. The first describes much less play. These are illustrative numbers; neither percentage alone establishes which account reflects greater chess strength.
Why ChessSum keeps ratings separate
A platform rating is meaningful in its own rating pool and time control. ChessSum shows the source rating rather than averaging Chess.com and Lichess numbers into a supposedly official combined rating. Likewise, the player with the most wins may simply have played more games.
What a result difference can tell you
Different opponents, time controls, sample sizes and periods can all accompany different results. A platform comparison can help you decide which games to review; it cannot by itself prove why you won or lost. Replay the games and review recurring mistakes before drawing conclusions.
How win rate is calculated
Win rate uses wins divided by included games. Draws are not half-wins in this metric. Self-play and import coverage also matter when selecting multiple accounts. The data guide explains the complete counting rules.