What is ChessLair used for?

ChessLair is a chess opening repertoire builder that organizes lines into groups and folders, quizzes your prep, runs Stockfish and tracks how deep each opening goes. It is a good fit for building a White and Black opening repertoire, drilling prep before a tournament, and finding thin spots in your opening knowledge.

Is ChessLair open source?

No. ChessLair is proprietary (closed-source) software and can't be self-hosted. In the Games & Emulation category, open-source options include Lichess, Stockfish and Sunshine.

What are some alternatives to ChessLair?

ChessLair competes with Chess.com and Chesshunter.

ChessLair: features, pricing and alternatives

About ChessLair

ChessLair is a web app for players who keep opening preparation in scattered notes and then forget it. It stores your moves, comments and variations in one private repertoire, so the reasoning behind a line stays attached to the line itself.

Variations are organized into groups and folders, and each move can carry a comment explaining why it was chosen. You can quiz yourself by opening, group, folder or single variation, and analyze positions with Stockfish while building lines. A dashboard summarizes repertoire depth, your strongest openings, the weaker color side and recently edited prep.

The service is in open beta at version 0.1 and is a hosted commercial product. It is free to start, with larger limits available on a paid upgrade; the scraped page does not list prices.

Key features

Save opening lines quickly after a game
Groups and folders for variations
Move-by-move comments explaining each line
Quiz mode by opening, folder or variation
Built-in Stockfish analysis
Dashboard showing repertoire depth and weak lines

Good fit for

→Building a White and Black opening repertoire
→Drilling prep before a tournament
→Finding thin spots in your opening knowledge

Tags: chess; opening-repertoire; chess-training; stockfish; quiz; spaced-practice

ChessLair: questions and answers

What is ChessLair used for?: ChessLair is a chess opening repertoire builder that organizes lines into groups and folders, quizzes your prep, runs Stockfish and tracks how deep each opening goes. It is a good fit for building a White and Black opening repertoire, drilling prep before a tournament, and finding thin spots in your opening knowledge.
Is ChessLair open source?: No. ChessLair is proprietary (closed-source) software and can't be self-hosted. In the Games & Emulation category, open-source options include Lichess, Stockfish and Sunshine.
What are some alternatives to ChessLair?: ChessLair competes with Chess.com and Chesshunter.