Learn- Practice Doesn't Work

When I open a topic like Piece Checkmates I, it loads up and then I move a piece. It displays computer thinking and nothing happens. I tried waiting for 5 min also.

Some things that migth help: Which browser are you using? Any error messages in the developer console (F12)? Any browser extension that might block access to tablebase.lichess.ovh?

I use Chrome. These are the error messages I get in the developer console. Deleted some stuff as it becomes unreadable then.

1. Refused to load the font '<URL>' because it violates the following Content Security Policy directive: "font-src 'self' lichess1.org <URL>"

2.The Web Audio autoplay policy will be re-enabled in Chrome 70 (October 2018). Please check that your website is compatible with it.

3. tablebase.lichess.ovh/standard?fen=8%2F8%2F3k4%2F8%2F8%2F4K3%2F8%2FQ6R%20w%20-%20-%200%201:1 Failed to load resource: net::ERR_CERT_AUTHORITY_INVALID

4. tablebase.lichess.ovh/standard?fen=8%2F8%2F3k4%2F8%2F3Q4%2F4K3%2F8%2F7R%20b%20-%20-%201%201:1 Failed to load resource: net::ERR_CERT_AUTHORITY_INVALID

Thanks. Narrowing in on the issue. What happens if you visit tablebase.lichess.ovh/standard?fen=8%2F8%2F3k4%2F8%2F8%2F4K3%2F8%2FQ6R%20w%20-%20-%200%201 directly?

Oh well, got it. It seems to be an issue on my end. I use my college WIFI. It has some kind of filter and for some reason, this particular URL gets flagged. Thanks for your efforts though :)

Ok, makes sense. In the next couple of days there will also be an update that should make it work regardless (github.com/ornicar/lila/pull/4531).