Likely referring to the subreddit (now private) which this subreddit is built around &#x27;solving&#x27;:<p><a href="https:&#x2F;&#x2F;www.reddit.com&#x2F;r&#x2F;Solving_A858" rel="nofollow">https:&#x2F;&#x2F;www.reddit.com&#x2F;r&#x2F;Solving_A858</a>