Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
On Chess.com, when you play live chess, when the match is done, on your right hand, above the view analysis button, it says something like this
How to check my mistake and can I do that without being premium member?
Click on view analysis or computer analysis button
Required, but never shown