---
title: Two Truths & a Lie — 20Q
emoji: 🐨
colorFrom: yellow
colorTo: blue
sdk: gradio
sdk_version: 6.19.0
python_version: '3.12'
app_file: app.py
pinned: false
license: apache-2.0
short_description: Lie to a koala detective's face. See if you walk out.
models:
  - prism-ml/Ternary-Bonsai-8B-gguf
  - prism-ml/Ternary-Bonsai-27B-gguf
---

# 🐨 TWO TRUTHS & A LIE — An Interrogation in Twenty Questions

**Lie to a detective's face. See if you walk out.**

You write three short claims about yourself — two true, one a lie — and take a seat
in Interview Room 3 of the Gumleaf Precinct. A koala detective asks you up to twenty
short-answer questions, then accuses. If the accusation is wrong, you fooled the
machine.

Who's on duty tonight:

- **☕ Det. Pip Barrow** — Ternary-Bonsai-**8B** (1.58-bit). Fast. Jumpy. Guesses.
- **🌧️ Insp. Marlowe Grey** — Ternary-Bonsai-**27B** (1.58-bit). Slow to wake. Hard to fool.

Both run on **ZeroGPU** through the PrismML llama.cpp fork (vendored in `./bin`),
one per-call `llama-server` per turn.

## 🔴 The tape is rolling — data collection, plainly

Every interrogation is **recorded and used as AI training/evaluation data**: your
three claims, the hidden lie label, the full Q&A transcript, the detective's
accusation, and the observation-room analysis. Records are stored as JSONL in a
**private** dataset repo. No account and no name are attached — only what you type.
A persistent 🔴 REC banner and a consent checkbox gate every game; if you don't
consent, nothing runs and nothing is saved.

One more honest detail, revealed in-game after each case: a **second, hidden model
instance** ("Sgt. Wattle, observation room") reads your answers as you give them and
slips behavioral notes to the detective between questions. You never see it during
play — you do see its full notes in your case file afterward.

## Running locally

```bash
pip install -r requirements.txt
MOCK_LLM=1 python app.py        # scripted brains, no GPU needed
python tests/drive_mock.py      # full game-loop test suite (mock mode)
```

Env knobs: `DATASET_REPO` (default `devmandan/2t1l-games`), `DISABLE_PUSH=1`,
`SKIP_27B=1`, `MOCK_LLM=1`.