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license: cc0-1.0
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# Lichess database positions with Stockfish evaluations

Positions with evaluations extracted from https://database.lichess.org/.

Evaluations were computed using Lichess's distributed Stockfish analysis [fishnet](https://github.com/lichess-org/fishnet), using various Stockfish versions.

column | type | description
--- | --- | ---
`fen` | string | FEN of the evaluated position. En passant square included only if a fully legal en passant move exists.
`cp` / `mate` | int *or* null | Signed evaluation of the position in centipawns or moves to mate, as computed by Stockfish. Exactly one of these is not null. Always given from White's point of view, so positive if White has the advantage
`move` | string *or* null | UCI notation of the next move played by the **human** player, if any. Always in Chess960 mode (king move to rook for castling).

Known issues:

* Note that even `mate` evaluations are not completely guaranteed to be correct, especially those produced before 2016.
* 2016-12, 2020-07 and 2020-08 are intentionally omitted, because due to intermittent bugs, many broken evaluations were produced in those months.