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2 changes: 1 addition & 1 deletion docs/tutorials/sb3/connect_four.md
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Expand Up @@ -11,7 +11,7 @@ title: "SB3: Action Masked PPO for Connect Four"

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This tutorial shows how to train a agents using Maskable [Proximal Policy Optimization](https://sb3-contrib.readthedocs.io/en/master/modules/ppo_mask.html) (PPO) on the [Connect Four](/environments/classic/chess/) environment ([AEC](/api/aec/)).
This tutorial shows how to train a agents using Maskable [Proximal Policy Optimization](https://sb3-contrib.readthedocs.io/en/master/modules/ppo_mask.html) (PPO) on the [Connect Four](/environments/classic/connect_four/) environment ([AEC](/api/aec/)).

It creates a custom Wrapper to convert to a [Gymnasium](https://gymnasium.farama.org/)-like environment which is compatible with [SB3 action masking](https://sb3-contrib.readthedocs.io/en/master/modules/ppo_mask.html).

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