Correlation Between Chess and Memory?

I, personally, am a firm believer that IQ, a metric that tests us on our ability to learn, can be raised through enviromental means. Hence, I have a story.

A year ago, I was an avid chess player. Like any other person browsing the internet, I stumbled upon Human Benchmark and did the memory test game. For sequence memory, I got around 27 each time. For visual memory, I got 14.

That being said, a year after I stopped playing chess, my sequence memory skills dropped to a measily 17. Therefore, I came to this conclusion that chess improves your sequence memory.

However, for me to prove this, and share my teachings, I would need people who play chess test these out, which eventually lead me to the Chess.com Forums section.

Human Benchmark link: https://humanbenchmark.com/dashboard

Please say your scores along with how much you play chess and how many years you've been playing (mention the breaks longer than 6 months).

Your Verbal memory is a lot better than mine. I get around 65, so you've almost got double my score.

As for your scores, they are pretty good. Do you wanna' try doing it every day for a week, three for each one of those, and see how much you improve? I'll do it too!

I'm a strong believable that having a strong memory helps in chess and playing chess helps to build strong memory. 
one of the best leetcoder used to practice his memory ability to a point that he can retain information easily and it helped in many aspects of his life, or chess in this context. do check it out here:
https://www.youtube.com/watch?v=p4xFVJTyJZg&ab_channel=ColinGalenI have also made a tool to aid my training to improve spatial memory skills with this website: