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Explorer shows games from players around this rating.
How many lines you've never practiced get added each day. Manually adds none — you pick them yourself from the Practice pool. Lines that are due for review are never held back.
Turn this off if the bar spoils your prepared traps — a jump in the evaluation tells you something is there before you've recalled the move. The bar always shows while you build.
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New lines enter your practice rotation a few a day, so a big import stays mostly out of sight. This shows what’s still waiting, grouped by opening — and lets you pull any group in straight away.
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OpenBook
Opening

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Repertoire check
Explorer
Your repertoire is empty
Pick a move below to start your first line. We'll prompt you to save it.
Analyze this position Lichess ↗ Chess.com ↗
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Analyze this position Lichess ↗ Chess.com ↗
OpenBook

Build an opening repertoire with the help of an engine and an opening database, then practice it until it sticks. This tool is totally free. If you log in, we'll save your work on our server. If you don't, it will live in your browser. Please let us know if you have any feedback.

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You're not signed in, so only public studies can be browsed here (pasting a link also works for unlisted ones). To import your own private studies, sign in — that's what gives OpenBook permission to read them from Lichess. Sign in with Lichess

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