I'm trying to find a specific website that I was using for life and death problems over the summer. Unfortunately I forgot to bookmark it and google isn't helping me much either. It wasn't goproblems.com, but it was something similar. I liked it because it would offer advice and tips as you tried to solve the problems, and then eventually give you less hints as you became better at solving the problems. For example, after you solved a problem it would tell you why playing there was the right or wrong move, so you actually learned something.

I think I found the link somewhere on this website, but it was buried in someone's reply and not part of any specific thread chain about these types of websites.

Could some people try and help out by listing different websites that offer this interactive life and death problem solving?

Are you looking for http://101weiqi.com/ ?

Maybe this helps...
http://senseis.xmp.net/?GoProblemsOnTheInternet

It's not anywhere on that list, and it's not the Chinese website that gamesorry posted. Hm, it's likely the website got shutdown if a simple Google search can't find it and it's not listed elsewhere. Ah, well. Still plenty of options for Tsumego anyway. Thanks!

Perhaps it was gochild? https://gochild2009.appspot.com/

Was it perhaps 321go.org? It’s a Dutch site which I like very much, with several other languages available (English, French, German, Portuguese, Swedish). I wonder why it isn't listed on that SL page but I don’t have the time to edit it right now.

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Have you tried searching your browser's history (assuming it hasn't been cleared since then) and perhaps Google's Web and Search History (assuming you found it through Google in the first place)?

https://history.google.com/history

Do you remember what language(s) it was in? Or which country?
Perhaps it was http://sahwal.com?
Or perhaps a Chinese or Korean website like http://weiqiok.com?

I finally found it!! https://online-go.com/puzzle/5

I went back into the Amateur section on this forum and read through any thread I remembered reading. I found it in the "New player looking for help" thread.

What I meant by it being similar to Goproblems.com is that the author gives commentary after you solve it. For example, after solving this puzzle the author says "White's stone prevents Black from forming two eyes. Black can not escape via A9 or C13, and a capture via A11 and A13 leaves a single eye."

I loved this bit of information since it helped me learn why the move is right and why I'm playing it. Alternatively, similar information will be given for wrong answers.

Thanks everyone for the additional websites.