---
pretty_name: Range Reader v0.1 — CFR Self-Play Hand Histories
license: apache-2.0
annotations_creators:
- machine-generated
source_datasets:
- original
size_categories:
- 100K<n<1M
tags:
- poker
- GTO
- Game
- texas-holdem
- hand-history
- open-hand-history
- self-play
configs:
- config_name: default
  data_files:
  - split: train
    path: out_min-2_max-6.jsonl
task_categories:
- reinforcement-learning
---

# range-reader-v0.1

613,399 No-Limit Hold'em hands in [Open Hand History](https://hh-specs.handhistory.org/) format (spec 1.4.7), one JSON record per line with a blank seperator line. Hole cards are shown for every seat. This is the training set for [range-reader](https://github.com/elliottneilclark/range-reader), which predicts a villain's hole cards from the action.

## Generation

Self-play from [rs-poker](https://github.com/elliottneilclark/rs-poker)'s arena:

```bash
rsp arena generate ./examples/configs -o out_min-2_max-6.ohh -n <hands>
```

Cash games, 5/10 blinds, randomized stacks, 2- to 6-handed (even split). Five agents, four built on counterfactual regret:

| Agent | Type | Notes |
|---|---|---|
| `CFR-Configurable` | real-time CFR | known-card estimator, coarse bet sizes |
| `GTO-Experiment` | real-time CFR | — |
| `6Max-RFI-GTO`, `Pekarstas-6max-RFI` | preflop CFR chart | fixed open ranges |
| `RandomPotControl` | pot-control heuristic | not CFR; call odds scale with pot, plus noise |

## Caveats

The CFR is a real solve, but bounded — strong on the immediate decision, thin past it:

- Up to 2048 ms per decision, 128 root iterations, regret-convergence early stop, root width set to the core count.
- Lookahead thins fast — one iteration and width 1 below the root, so multi-street planning is shallow.
- Coarse action abstraction: a handful of bet sizes (~2.5x raises, ⅓/⅔/full pot, shove).
- Charted agents play fixed preflop ranges; the pot-control agent is a heuristic.

Expect competent, varied poker — short of a full-tree Nash equilibrium.

## Schema

Each line is `{"ohh": {...}}`: table and blinds, `players` with seats and stacks, `rounds` of streets, and per-street `actions` (post, deal, fold, call, raise, all-in). Dealt cards carry the `cards` field. See the [OHH spec](https://hh-specs.handhistory.org/).

## License

Apache-2.0.