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“I had been stuck at the same Elo for months. Two weeks with OpenChess and I gained 100 points.”
“Genuinely useful to build an opening repertoire that is reliable and true to your own style, with puzzles matched to that repertoire and your game analysis.”
“Genuinely different from anything else I have tried. You learn from your own mistakes, everything fits together, and it is seriously addictive.”
“The one and only site if you want a repertoire with a tree view, training sessions and puzzles that actually make you progress.”
“For getting better at openings, there is nothing better.”
“It is the simplest way to learn openings with every single variation.”
“I was finally able to work on the variations I was never comfortable with. Now I play them without hesitating.”
“A training solution built around openings, easy to use, and growing with new features all the time.”
“Building your own repertoire, with your own tree. It becomes hard to do without.”
“Once you understand the plans behind an opening, this is the best way to memorise it: you organise your repertoire your own way and learning becomes fun.”
“A really good tool for staying consistent.”
Sound familiar?
Every chess player faces these frustrations when working on their game.
You forget everything by move 3
You watch videos, study lines... and blank out in your games.
Your puzzles have nothing to do with your openings
Generic tactics that never appear in your actual games.
You analyze your games and remember nothing
You never know how to analyze a game.
1 repertoire. 3 trainings. 3 FSRS memories.
Everything starts from your opening: it generates your puzzles, and your games refine it.
Review at the optimal moment. Your mistakes automatically become exercises.
Powered by FSRSThe move you actually play
The generator doesn't suggest your line? Lay it down yourself, move by move, with Stockfish's evaluation and what other players at your level actually play.
Your moves and the opponent's replies
Frequency, win rate and evaluation at every position
Edit or delete a branch you no longer need
Annotations that speak
Write your notes right inside your tree, on the position you are looking at. Select a word: it carries your arrows and your moves, and replays them on hover.
One word carries a diagram, moves, or both
AI voice generated for your notes
Openings, puzzles, games: the same tags everywhere
Your progress, rewarded
60+ trophies to unlock, daily streaks and challenges — every effort counts.
Your crest, your mastery
Every training strengthens your crest. Theory, tactics and analysis progress independently, from Bronze to Master.
Built on real games
OpenChess uses public chess data to generate repertoires and drills from the positions you'll actually face.
7B+
Games analyzed
5M+
Puzzles generated
125
Ready-made repertoires