We used 890M chess games to make an interactive opening graph
Chess openings visualized from over 800 million Lichess games, 2 million tournament games and 1 million chess engine games.
We used 890M chess games to make an interactive opening graph launched on December 1, 2019 with 295 votes, #34 of 2,946 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 6 years on.
In plain words
This is an interactive graph visualizing opening moves from 890 million chess games. The tool lets users explore chess openings by seeing which moves are played most frequently at each position. It's designed for chess players of all levels who want to understand common opening patterns and strategies based on real game data. The graph structure makes it easy to navigate through different variations and see how professional and amateur games diverge from the standard openings.
written from the facts on this page · September 2026
From the sources
Please note that this site is intended as an opening explorer, if your PGN is long or obscure, it is unlikely we will be able to trace all of it. If you are a Supporter, the server will be used to provide greater depth to your search. Please make an account to load extra data from our server for free. This unlocks Supporter features like "More" and "Transpose" to explore a database 200 times as large. You will be able to use Supporter features 15 times a day for free, or you can become a Supporter for unlimited access. Please consider clicking the button below to visit the features page and become afrom chessroots.com
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