We asked the ChessGoals community: What single tip, resource, or habit helped you gain your last 200 rating points? 66 adult improvers gave us their ratings, preferred servers, time control format, and their best tips. The first thing we did was convert every rating to a Chess.com Blitz equivalent using the ChessGoals rating comparison tables. As expected, improvement is not one-size-fits-all. What works for an 800-rated player is not the same as what helps an 1800 break a plateau. Here's what worked for our students at each rating range. <800:…