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A jump in rating by 100 points without any preparation

From the 19th to the 23rd of April I was only dreaming to get 1700 rating in bullet. After my rating hit 1691 (April 25th), I didn't watch any learning chess video. And on the April 27th my rating was already 1779. "I just got very lucky!" - thought I. But the rating still increases and now it's 1791.

How?
Good job! It happens to most people, random jumps in rating. But your rating will fluctuate, be warned.
Well I wouldn't read too much into it , just before you reach 1800 the chess gods will put you on tilting streak to lose 100 points , build you up , knock you down .......lol xxx