what’s the best feeling in chess?

To crush your enemies, see them driven before you, and to hear the lamentation of their women.

An evergreen game. Can see first option as I liked  a strategy that ends with a CM via a pawn.

But ultimately win or lose - you learned something is my understanding or opinion.

(a reply to a post about cheating in general and my opinion) I am not the player I was so normally play rapid, classical,or over some time in days. I am not a blitz bullet player anymore. If I detect cheating which can be the same amount of time for a move I have played safe and consolidated so there bot runs the clock down. Now I resign and they can have my points as I cannot possibly give them my time of day wasted opportunity that doesn't do them any good. Side issue about cheats. Playing a bent game is an insult to the lifes work putting in the knowledge.

Win after 4 moves

Checkmating them and the new rating/league trophies increase.

When your opponent plays an inaccuracy and you completely dominate afterwards

Sometimes you play a bad sacrifice but your opponent still messes up. Makes me feel like a trickster

Finally beating an opponent who has till that point won every single game against you.

Also checkmating by accident. Like, you thought it was a good move, but not that good.

Clawing back from a lost position, one pawn and/or positional advantage at a time, and winning in the end game after a long and testing game.

I'll tell you what doesn't feel good. I'm about to win on my opponent's blunder. This is the highest rated player I've played and I wanted to win on my own merit not his mistakes. Otherwise, the 2nd or 3rd person made the right comment- …to hear the lamentations of the women.

I reckon the best feeling is when you remove all of your opponents pieces. Then they are left with their king and winning is basically impossible for them

When you get to say " in this position I sacrificed THE ROOOK!" and checkmate in a few moves

First, "Ohh no my queen" then destroying them completely in the next 3-4 moves

Winning by mate when I'm close to losing by time. I won 2 games this week with less than a minute left while my opponents had a huge time advantage. Also, finding a mate in an evenly matched middle game.

Winning on time with 1 pawn left 
Winning the queen with a sniper bishop from 632617767 miles away
Opponent losing 2 moves after I offered draw 
Winning a tournament OTB
Winning an online tournament
Getting peak ELO
Sacrifcing multiple pieces in a row
Beating high rated player (2000+) (in both online and OTB)
Seeing my idol grandmasters do well in a tournament
Seeing Gukesh FAIL!!!! sorry my guy, u not gonna defend ur title. bye bye title
It's the first day of the month to check new otb rating, and it skyrocketed

The best feeling is when your down 3 to 4 pieces and pull a checkmate out of no where when I do that I say BOOM

playing an OTB game and sacrificing, a piece, and seeing their face pull in disgust, thinking it a blunder. then watchng as they slowly play out the moves and realise their predicament

The best feeling in chess is learning.

Getting a super hard mate when you learned it 1hr ago without looking to much into it