LegumMagister/chsm8-pre-training

CHSM8 pre-training corpus Every Lichess rated, standard, human-vs-human game from 2013-01 to 2026-06 where both players are rated ≥ 1800 and the game is at least blitz speed, cleaned of clock scrambles. This is exactly the corpus the CHSM8 chess model was pre-trained on. Games 1,068,263,794 Moves (plies) 71,058,511,914 Months 162 (2013-01 … 2026-06) Size on disk 163.7 GB (1,165 files) Parquet (zstd) Source Lichess open database (CC0) One row = one game.… See the full description on the dataset page: https://huggingface.co/datasets/LegumMagister/chsm8-pre-training.

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