# Single-Player Alpha Zero examples

**URL:** <https://discuss.ray.io/t/single-player-alpha-zero-examples/6539>\
**Category:** RLlib\
**Created:** [June 17, 2022, 1:52pm UTC](https://discuss.ray.io/t/single-player-alpha-zero-examples/6539 "2022-06-17T13:52:49Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ojon](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/ojon/32/2194_2.png) [@ojon](https://discuss.ray.io/u/ojon)\
**Post date:** [June 17, 2022, 1:52pm UTC](https://discuss.ray.io/t/single-player-alpha-zero-examples/6539/1 "2022-06-17T13:52:49Z")

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**How severe does this issue affect your experience of using Ray?**

- Medium: It contributes to significant difficulty to complete my task, but I can work around it.

I would like to take a look at some examples of using the Single-Player Alpha Zero algorithm.

The [link](https://github.com/ray-project/ray/blob/master/rllib/contrib/alpha_zero/examples/train_cartpole.py) of the [documentation](https://docs.ray.io/en/latest/rllib/rllib-algorithms.html#alphazero) is broken.

Also if anyone have done something with it and is willing share, I will be thankfull.

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**Author:** ![christy](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/christy/32/2934_2.png) [@christy](https://discuss.ray.io/u/christy)\
**Post date:** [June 17, 2022, 7:16pm UTC](https://discuss.ray.io/t/single-player-alpha-zero-examples/6539/2 "2022-06-17T19:16:44Z")

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Hi Ojon,

Thank you. The link is here: [ray/cartpole-sparse-rewards-alpha-zero.yaml at master · ray-project/ray · GitHub](https://github.com/ray-project/ray/blob/master/rllib/tuned_examples/alpha_zero/cartpole-sparse-rewards-alpha-zero.yaml)

How did you navigate to get that broken link?

The way to find all tuned examples is to click “Tuned examples” on either master or latest Doc doc page: [Examples — Ray 3.0.0.dev0](https://docs.ray.io/en/master/rllib/rllib-examples.html)

 ![image](https://us1.discourse-cdn.com/flex020/uploads/ray/original/2X/c/c527480ffc038dab6ce38f74ab5000abd1914e87.png)

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**Author:** ![ojon](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/ojon/32/2194_2.png) [@ojon](https://discuss.ray.io/u/ojon)\
**Post date:** [June 21, 2022, 3:05pm UTC](https://discuss.ray.io/t/single-player-alpha-zero-examples/6539/3 "2022-06-21T15:05:57Z")

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Thank you chirsty!

I got to the broken link from latest doc (1.13.0) → Ray RLlib → Algorithms