This dataset contains 732 million rows of chess positions stored in Parquet format.
Each row includes the following fields:
fen: A standard FEN string representing the current board position.
wdl: A 3-element vector [win_prob, draw_prob, lose_prob] representing the win/draw/loss probabilities for the side to move.
policy: A vector of 1858 elements representing the probability distribution over legal moves for the current position, based… See the full description on the dataset page:
https://huggingface.co/datasets/burmich/ChessFENS.
