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license: apache-2.0
tags: [bridge, contract-bridge, reinforcement-learning, self-play, game-ai]
---
# Pidgin: contract bridge bots from self-play
Weights for the bots in https://github.com/hsperr/pidgin. Code, training recipes and the server
live there; this repo only holds the weights.
| Team | Bidding | Card play |
|---|---|---|
| PidginV1 | `D_cw_s75k.pt` | `play_E48_wideleagueH.pt` |
| BRL | `brl_fsp_weights.npz` | `play_B2g_s540k.pt` |
| PidginV2 | `pidginv2_bid_s40000.pt` | `play_B2g_s540k.pt` |
Other files: `belief_r2.pt` (belief net for the bidding search),
`bench_100k.npz` (frozen card-play benchmark), `play_E48_leagueE.pt`.
`brl_fsp_weights.npz` is not ours: it is the FSP bidder of Kita et al. (2024),
redistributed under its Apache-2.0 licence (`brl_LICENSE`).
## Use
```bash
git clone https://github.com/hsperr/pidgin && cd pidgin
scripts/get_models.sh
python scripts/bid.py AKQ2.JT9.876.543 --auction "1H P"
scripts/serve.sh
```
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