Why did I suddenly get bad at chess?

So over a month ago I managed to peak at 2000, succesfully putting myself above the plebs of u2000
Unfortunately, since then my rating fell about 200 points. Too often I make moves that are just plain tactical blunders and my positional understanding isn't great either. Either feeling confident or not. Never experienced something like that, just plateaus and enlightenment.
Chess is a great hobby of mine and I spend time daily on trying to "learn" how to play better. Pretty heartbreaking.

Divine punishment? Subliminal mind engine overheat? Any methods or ideas that can help get out of that hole? Or is it hope and pray?

I've experienced similar. In general you can fix it by:

Get enough sleep a few days in a row and
Eat well a few days in a row and
Choose a time when you can play without distractions and
Choose a time when your mood and energy are high and you're excited to play

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If you just play every day, then inevitably there will be times when one or all of those aren't met, and when you do that your rating will tend to fluctuate about 200 points... which is fine, that's pretty normal, just don't beat yourself up for it (or only play when you're at 100%).

I don't have issues with positional play. I consider myself a player with good positional understanding. It's just general play strength rn.

It's extended in time, nothing very situational.

Accept that you are a 1900+ player and work hard for another 100+ rating.

Your current 1800+ will go back to 1900+ naturally.

It is all about statical flukes within +/- 100 elo of 1900.

Yeah, seems you were confusing your peak with your new normal. You're a bit underrated at the moment, but like drmrboss says you should be back to 1900+ pretty soon without much trouble.

I like the third edition better.

Personally... and among my former chess students as well... I've found that when you learn some new strategic concepts your actual game results (and your rating) will often drop sharply as you struggle to integrate the new ideas into your play. You'll make both positional misjudgments and simple tactical oversights until you manage to dovetail the new ideas in with the old.

Only after a month or two, when you succeed in assimilating and integrating the new concepts into your style, will your practical results go back up, to a new high.

One month later, OP is back to 1900+,

Hello,

There are ups and downs in everyone's career, so it is completely normal.  When you are down, you have to change something, you have to do something new. I can help you if you are stucked.  I am a full-time chess coach, you can check my profile.  Let me introduce myself.

My name is Gabor Balazs. I am a Hungarian FM, fighting for the IM title. My top ELO is 2435. I have been playing chess for 21 years. I won the Hungarian Rapid Championship twice (U16 and U18).

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change gears. let ur opp come to u or dont try too hard or play outta ur comfort zone or s/t like that. but gaw4bid dont study or analyze too much.

tho i do hava question. where are u losing ? u said tactic blunders ? dat not good. eyes wide open. s/w else ? position chess is feeling - they say. hard2improve. so feel exonerated. bye  . 

it’s your biorhythms.

Silman recommends the fourth edition, as it is updated with some computer analysis, and the book is completely rebuilt. I’ve personally learned quite a bit from the book.

i think you might been getting bored with chess now.. I mean yoy achieved your goal of passing 2000 elo so now i believe you dont feel that motivated to win

I've literaly forgotten what it feels like to win a game of chess.

Ever watched Men In Black 3. There's a scene in the film when J and K can't seem to figure things out, they're out of time and they don't even have the ideas to run out of.

Anyway, K suggests an old remedy his gramps (I think it was his gramps) used to recommend sure-heartedly. He suggests they go and grab a slice of pie.

i think i got it.

your chess went downhill the moment you forgot to eat your fish and chips.

I am in this same situation. My rating was 1275. All of a sudden I started losing more and more matches. Now my rating is 1150. I don't know what to do. 

Ignore your rating. Problem solved.