# connect4 checkpoint

Accepted fixed-bot initialization checkpoint for the selected-five MuZero/EfficientZero training sequence.

- Source run: `connect4_hf_bot_mode_1m_20260522`
- Checkpoint: `checkpoints/envstep_1000000.pth.tar`
- Uploaded: `2026-05-23T11:46:20+00:00`

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## Latest Best Checkpoint

The current latest best checkpoint pointer for this repository is:

`checkpoints/main5_bot_only_stabilize_overnight_20260524/ckpt_last.pth.tar`

Metadata:
- Game: `connect4`
- Source run: `main5_bot_only_stabilize_overnight_20260524`
- Checkpoint role: final bot-only stabilization `ckpt_last.pth.tar`
- Local source at upload: `/mnt/nvme/home/molfetta/molfetta-reasoning/models/main5_bot_only_stabilize_overnight_20260524/connect4/attempt-01_260524_201948/ckpt/ckpt_last.pth.tar`
- Checkpoint SHA256 at upload: `8c4430c0379133c879389372c0a60b3195ea44d48c57b7b25db02a3ae5349b0e`
- Final env steps: `199673`
- Validation note: final watchdog gate on 2026-05-24/2026-05-25 reported the last three non-initial fixed-bot evals at `reward_mean=1.0`; seat-swapped fixed-bot gate; seat1_reward_mean=1.0 and seat2_reward_mean=1.0.
- Upload manifest: `metadata/main5_bot_only_stabilize_overnight_20260524_latest_best_manifest.json`

Older checkpoint files in this repository are preserved; this section is the canonical pointer to use when a consumer needs the latest best checkpoint.
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