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# Aix-compatible Lichess database
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This dataset contains the [Lichess database](https://database.lichess.org/) of 7+ billion chess games, but in a format queryable using [Aix](https://github.com/thomas-daniels/aix), with the `aixchess` extension for DuckDB.
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Generated using [pgn-to-aix](https://github.com/thomas-daniels/aix/tree/main/pgn-to-aix).
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# Aix-compatible Lichess database
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This dataset contains the [Lichess database](https://database.lichess.org/) of 7+ billion chess games, but in a format queryable using [Aix](https://github.com/thomas-daniels/aix), with the `aixchess` extension for DuckDB.
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Three compression levels (Low, Medium, and High) are offered for the chess game encoding, enabling a trade-off between decoding speed and size. The Parquet files themselves are all zstd-compressed at level 19.
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Generated using [pgn-to-aix](https://github.com/thomas-daniels/aix/tree/main/pgn-to-aix).
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