Chessco opening atlas
Explore opening families and the routes players actually choose. Every count comes from public game history attached to an indexed Chess.com or Lichess account.
79,022,120
game records observed
78,791,695
ECO-classified
94
opening families
Your opening fingerprint
See your win, draw, and loss record in every indexed opening family and variation. Results are always shown from the account player's point of view.
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Sign inOpening coverage
99.7 % tagged
78,791,695 of 79,022,120 account-game observations reach a recognized opening within the first two moves. A game can appear once for each indexed player in it, so these are evidence records, not a claim of unique games.
Included sources
Ranked by games
Counts cover Chessco's combined public opening index.
17.2%
of classified
Most played variations
10.2%
of classified
Most played variations
9.8%
of classified
Most played variations
8.5%
of classified
Most played variations
6.4%
of classified
Most played variations
6.3%
of classified
Most played variations
5.8%
of classified
Most played variations
2.8%
of classified
Most played variations
2.2%
of classified
Most played variations
1.8%
of classified
Most played variations
1.8%
of classified
Most played variations
1.7%
of classified
Most played variations
1.7%
of classified
Most played variations
1.6%
of classified
Most played variations
1.6%
of classified
Most played variations
1.4%
of classified
Most played variations
1.3%
of classified
Most played variations
1.3%
of classified
Most played variations
Turn patterns into a plan
Scout a player to see the routes they choose, then rehearse the positions that matter in Prepare and Practice.