Discover Chess

An interactive force-directed graph of all 3,704 ECO chess openings, colored by volume.

YouTube channel by Stjepan Tomic with systematic opening repertoire videos and middlegame concept series.

Searchable chess game database with millions of games, an opening explorer, and player statistics.

Free chess training site combining spaced repetition for openings, blindfold tactics, and endgame practice.

Interactive opening explorer that visualizes the most common paths through the opening phase as a decision tree.

Free, open-source opening repertoire trainer using spaced repetition, compatible with any PGN repertoire file.

Opening repertoire builder and trainer with spaced repetition, tailored to your Elo and designed for efficient memorization.

Personalized opening explorer that analyzes your own games from Lichess or Chess.com to show your actual opening stats.

Free cloud database of over 40 million chess positions with optimal engine moves, built for opening research.

Human-like AI chess engine trained to predict human moves at specific Elo levels, ideal for realistic practice.

Free online database of millions of master games with a powerful search interface and opening statistics.

Massive historical game database with over 10 million games, player bios, a community forum, and a puzzle archive.

Online chess learning platform using spaced repetition to help players memorize openings, tactics, and endgames.

Comprehensive chess training site renowned for its tactics trainer, opening trainer, and large game database.

The world's largest chess platform, offering play, tactics, courses, game analysis, and live event coverage for all levels.

Free, open-source online chess platform with zero ads, zero paywalls, and a full suite of play and training tools.