About Nexa chess

Nexa chess is a web application that automatically imports your games from Lichess and Chess.com to analyse them with Stockfish. The idea is simple: instead of reviewing games on each platform separately, you have them all in one dashboard where you can see your performance broken down by opening, middlegame, and endgame.

The application is designed for players who want to understand how their game evolves over time, not just see the result of a particular match. You can compare your performance week by week, spot which mistakes keep repeating, and decide which phase of the game to invest your study time in.

• Import your Lichess and Chess.com games automatically by connecting your accounts.
• Review each game with Stockfish analysis: critical positions, tactical errors, and doubtful moves.
• See your performance broken down by phase: opening, middlegame, and endgame.
• Compare your play week by week to see if your study shows up in your games.
• Check an estimate of your virtual FIDE level based on public tables and the analysis of your games.
• Explore your most played openings with statistics by ECO line.

Nexa chess is free. There are no paid plans or locked features. The application may show ads to cover infrastructure costs, but full access to all features requires no payment.

It is also available as an Android app on Google Play, with the same features as the web version.

Nexa chess is an independent project built with Next.js and deployed on Vercel. Authentication uses Supabase, and game analysis is done with Stockfish on a dedicated backend server.

The code integrates the public APIs of Lichess and Chess.com to import games. We do not store passwords for those platforms: the connection is made via OAuth (Lichess) or using your public username (Chess.com).

If you have questions about how the metrics work or how estimates are calculated, see the FAQ. For any other questions, you can write to us from the contact page.