---
license: apache-2.0
pretty_name: systemone-lite Phase 2 distill
task_categories:
  - text-classification
  - multiple-choice
tags:
  - system-one
  - alias-ce
  - spatial
  - cloze
  - zero-leakage
  - action-v2
  - staged-chess
size_categories:
  - 100K<n<1M
---

# systemone-lite-phase2

Typed System One distill rows (`task` / `state` / `instructions` / criteria /
`label_alias`) for [`systemone-lite`](https://github.com/fritzprix/systemone-lite).

## Revision (2026-09-26)

Paired with Hub model revision **action-v2-qwen**
(`dwidlee/systemone-lite-0.5b`).

| Change | Detail |
|---|---|
| Chess | `staged_v1` — piece + destination, option caps ≤8 |
| Spatial | `action_v2` — legal-only actions; Connect4 drop≤3 + win_now |
| Sokoban `test` | Deadlock alerts balanced 75/75 yes/no; remap_alert_prob≈0.35 |

Postmortem: repo `docs/NOTE_ACTION_V2_QWEN_POSTMORTEM.md`.

## Critical: train / test hygiene

**0.00%** train∩test overlap on `state_task` fingerprints
(`scripts/audit_train_eval_overlap.py`). Earlier mixes had severe leakage;
do not regress.

| Mechanism | Detail |
|---|---|
| `word_games` | Disjoint TRAIN / EVAL vocabularies |
| `debate_judge` | Held-out topics (eval never sees train motions) |
| Spatial / chess / CA | Eval states rejected against train state hashes |
| `nlp_cloze` | WikiText-2 **document-disjoint** (train split → train, test split → eval) |

**Do not mix `train` rows into `test` (or vice versa) when building local evals.**

## Splits

| Split | Rows | Role |
|---|---:|---|
| `train` | 240800 | SFT |
| `test` | 4700 | Held-out eval only |

Gym counts (train): `{"connect4": 35000, "game2048": 35000, "gridworld": 35000, "sokoban": 35000, "chess": 32400, "cellular_automata": 12000, "nlp_cloze": 12000, "word_games": 12000, "debate_judge": 10800, "resource_allocator": 10800, "ticket_dungeon": 10800}`

## Schema

Flat columns for Hub friendliness: `state` and `meta` are JSON strings;
`criteria_keys` / `criteria_values` parallel lists.

## Cite / notes

- Leakage + cloze: `docs/NOTE_S1_CLOZE_AND_LEAKAGE_2026-09-22.md`
- This revision: `docs/NOTE_ACTION_V2_QWEN_POSTMORTEM.md`
- Not affiliated with TypeSafe AI / JevBench official leaderboards.