Dropped my ranking point even after I won with AI

I can’t believe my ranking point after I did a couple of games with AI. My point dropped so much. I won today, but my rank dropped to 1k from 1d. How’s it going on here?

See “My rank decreased after a win” in FAQs FAQ - Frequently Asked Questions


It may also look like more than it is, since the ranking looks like this:

… > 1.5d > 1.4d > 1.3d > 1.2d > 1.1d > 1.0d = 0.0k > 0.1k > 0.2k > 0.3k > …