| --- |
| license: mit |
| tags: |
| - chess |
| - stockfish-19 |
| - soft-labels |
| - multipv |
| - endgame |
| pretty_name: Endgame Stockfish 19 soft targets |
| --- |
| |
| # avewright/endgame-dataset |
|
|
| **6–13 piece** positions with official **Stockfish 19** MultiPV soft |
| targets. SF vs SF games start from Lichess ECO, fast-forward (capture-biased) |
| until the piece window, then label. |
|
|
| **300,017** rows. Source id `4`. Vocab `compact` (1968). |
|
|
| ## Filter |
|
|
| - Keep only boards with `6 ≤ n_pieces ≤ 13` |
| - Stop the game below 6 pieces (Syzygy territory) |
| - `split=1` is a ~5% holdout. Honor `split`. |
|
|
| ECO starts: 7,852. |
|
|
| ## Teacher |
|
|
| - Stockfish 19 tag `sf_19` (``) |
| - Full strength, `Threads=1`, `Hash=64`, `UCI_ShowWDL=true` |
| - Label: **100,000 nodes / MultiPV=8** / `tau=120` |
| - Fast-forward play: captures first, else ≤800-node search |
| - `cp` / `mate` / `wdl`: **White-absolute** |
| - `soft_indices` / `soft_probs`: width 8 |
|
|
| Accepted so far: 299,982. |
|
|
| ## Files |
|
|
| - `data/shard_XXXXXX.parquet` |
| - `teacher.json`, `endgame.json`, `openings.json`, `manifest.json`, `stats.json` |
|
|
