# Raw source snapshot

This directory is explicitly labeled **raw**. It contains unmodified copies of
the seven upstream CSV files scanned by the `1.1.0` builder:

| raw path | upstream split | difficulty | rows |
|---|---|---|---:|
| `sudoku_train.csv` | train | original | 100,000 |
| `sudoku_test.csv` | test | original | 1,000 |
| `processed/sudoku_extreme_train_r0.csv` | train | r0 | 553,009 |
| `processed/sudoku_extreme_test_r0.csv` | test | r0 | 61,127 |
| `processed/sudoku_extreme_train_r1_4.csv` | train | r1_4 | 529,736 |
| `processed/sudoku_extreme_test_r1_4.csv` | test | r1_4 | 58,717 |
| `processed/sudoku_extreme_test_r5_19.csv` | test | r5_19 | 111,831 |

Total: **1,415,420 rows**. This is the complete candidate pool for the v1
protocol, not the complete 8.1M-row upstream repository. Unused difficulty
buckets and unrelated dataset families are intentionally excluded.

These files are not additional Hugging Face splits. The dataset card explicitly
maps only `data/*.parquet` into the `default` config. See
`metadata/raw_manifest.json` for SHA-256 hashes and exact provenance, and
`RAW_DATA_LICENSES.md` before redistributing the raw files.