Datasetpublic

chorcat/rukh-elo-bins

chorcat/rukh-elo-bins A balanced sample of rukh-games-1800: up to n_per_bin games per 100-Elo bin of the average rating of both players, for Elo conditioning experiments. Part of Rukh, a chess language model built from scratch as a course on generative and agentic AI. Every derived dataset ships with the exact filters and counts of its manifest.json, so it can be regenerated with rukh data elo-bins. Files File Bytes SHA-256 games.parquet 65955015… See the full description on the dataset page: https://huggingface.co/datasets/chorcat/rukh-elo-bins.

sourceHugging Facecc0-1.0updated 19d agoView on Hugging Face

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Dataset Card

chorcat/rukh-elo-bins

A balanced sample of rukh-games-1800: up to n_per_bin games per 100-Elo bin of the average rating of both players, for Elo conditioning experiments.

Part of Rukh, a chess language model built from scratch as a course on generative and agentic AI. Every derived dataset ships with the exact filters and counts of its manifest.json, so it can be regenerated with rukh data elo-bins.

Files

File	Bytes	SHA-256
`games.parquet`	65955015	`3e895e2503ce19a3750a919bcea88601e5b0e9d3f94e7b05da76daa440b972b8`

Rows: 423829.

Columns

Column	Description
`game_id`	signed 64-bit hash of the Lichess `Site` URL (first 8 bytes of SHA-256)
`uci`	space-separated UCI moves of the whole game, verified legal with python-chess
`n_plies`	number of half-moves
`white_elo`	White's Glicko-2 rating at game time
`black_elo`	Black's Glicko-2 rating at game time
`result`	`1-0`, `0-1` or `1/2-1/2`
`time_control`	Lichess `base+increment` in seconds
`utc_date`	date the game was played (UTC)
`eco`	ECO opening code
`month`	`YYYY-MM` partition the game came from
`bin`	lower edge of the 100-Elo bin of the average rating

Provenance and filters

Source: rukh-games-1800 (from Lichess/standard-chess-games) (months 2025-01, 2025-02).

json

{
  "bin": "((white_elo + black_elo) // 2) // 100 * 100",
  "n_per_bin": 50000,
  "seed": 42
}

Counts:

json

{
  "1800": 50000,
  "1900": 50000,
  "2000": 50000,
  "2100": 50000,
  "2200": 50000,
  "2300": 50000,
  "2400": 50000,
  "2500": 44982,
  "2600": 17522,
  "2700": 5669,
  "2800": 2316,
  "2900": 1436,
  "3000": 1802,
  "3100": 102
}

Generated on 2026-09-19 with rukh 0.0.1.

In the course

—Built in M1 · Del PGN al tensor: los labs, the lesson that runs every command behind this repository.
—Measured in the single results table: every stage of the course, the same suite, the same day.
—Bring it to the paths the configs read: uv run rukh pull rukh-elo-bins.

License

CC0 1.0. The games, puzzles and evaluations come from the Lichess open database (https://database.lichess.org, https://huggingface.co/Lichess), published under CC0; the derived files keep that license. Please credit Lichess when you use them.