| --- |
| license: mit |
| pretty_name: Chess master v1 |
| task_categories: |
| - other |
| tags: |
| - chess |
| - stockfish |
| - soft-labels |
| - tablebase |
| - puzzles |
| - multipv |
| configs: |
| - config_name: positions |
| data_files: positions/*.parquet |
| - config_name: annotations |
| data_files: annotations/*.parquet |
| - config_name: membership |
| data_files: membership/*.parquet |
| - config_name: quarantine |
| data_files: quarantine/*.parquet |
| --- |
| |
| # avewright/chess-master-v1 |
|
|
| Linked master chess tables: **positions**, **annotations**, and **membership**. |
| One position can keep SF19, Lichess MultiPV, a puzzle line, Syzygy, and a model |
| mistake at the same time. Flat training mixes are recipe exports, not the source |
| of truth. |
|
|
| Join on `position_id`. Absent metadata is `null` / `unknown`, never coerced to 0 |
| or "verified". |
|
|
| ## Load |
|
|
| ```python |
| from datasets import load_dataset |
| positions = load_dataset("avewright/chess-master-v1", "positions", split="train") |
| annotations = load_dataset("avewright/chess-master-v1", "annotations", split="train") |
| membership = load_dataset("avewright/chess-master-v1", "membership", split="train") |
| ``` |
|
|
| ## Counts |
|
|
| | Table | Rows | |
| |---|---| |
| | Mix positions / annotations / membership | 1,004,000 each | |
| | Unique `position_id` | 1,004,293 | |
| | Train ∩ eval | 0 | |
| | Value-eligible | 451,064 (SF19 only) | |
| | Depth sentinels | 72,565 | |
| | Disagreeing best-move positions | 66 | |
|
|
| See `quality_report.json` and `SCHEMA.md`. |
|
|
| ## Label contracts |
|
|
| - SF19 CP/mate/WDL are White-absolute. Lichess perspective is unverified. |
| - `soft_probs` are **probabilities**, not logits. The transform is recorded. |
| - Puzzle FEN is before the opponent setup move. Keep the full line. No invented CP/WDL. |
| - Syzygy DTZ is not mate. Value stays masked until conversion is verified. |
| - Off-PV model moves have unknown regret, not an assumed penalty. |
| - Recipes must not silently relax quality gates. |
|
|
| ## Pinned sources |
|
|
| | Source | Revision | License | |
| |---|---|---| |
| | `avewright/chess-soft-sf19` | `68cef6c9ba62c62f904f25305f1a7489dab825e0` | MIT | |
| | `avewright/chess-soft-multipv-lichess` | `291acea2a2ce6fc2aba4b289110d1920cf969afe` | MIT | |
| | `avewright/chess-soft-syzygy` | `3889985c482837aa3082e182d8f123e005e2c0d4` | MIT | |
| | `Lichess/chess-puzzles` | `479ea9bc9f681385f5adb23fa27a96c2dc8ae599` | CC0-1.0 | |
| | `avewright/chess-soft-100m-swa-mistakes` | `69b75e12ab2867c8b9a63d385065dfe646cf86e1` | MIT | |
|
|
| Baseline recipe: `recipes/pilot_45_35_15_5.json` (45% SF19 / 35% Lichess / 15% puzzles / 5% Syzygy). |
| That mix is a baseline, not an optimum. |
|
|
| This pack is **not** a claim that eval rows are unseen by older checkpoints. |
|
|
