Yes
So many people playing chess without knowing the rules !?

There's a reason why the USCF requires a tournament director to have a rule book available at tournaments. There are many rules, and the rules have subsets. Also, the rules change frequently.
I would never depend on my memory for the details of a specific rule. Although I know the basic rules, there have been times when I forgot, or didn't know about, some obscure rule that isn't normally encountered.
There is a problem that most players learn the rules by word-of-mouth, they never bother to read the rule book. Many times what they are told is wrong or outdated.
And then there's the case of a 2008 Women's World Championship game where the arbiter ruled a game a draw (one player's time ran out) because checkmate wasn't forced. He was overruled on appeal because the rule is checkmate by any series of legal moves. He should have referred to the rule book rather than relying on his memory.
https://en.wikipedia.org/wiki/Women's_World_Chess_Championship_2008

I,m not saying that I know all the rules however, I do know you can,t uncastle, promote to a pawn,and understand en passant capturing. I also know the rules of stalemate,and drawing a game. Mind you all that I'm not boasting about this,but if you spend any time reading the forums then you'llknow how many players lack the basic understanding of these principals.

As for tournaments, I've never really played an Official Chess tournament. And hence, don't know any tournament rules.

I wonder how often do the Support team get "bug reports" of a strange pawn move capturing into an empty square.

There are many threads about rules. Most deal with en passant and Chess.com not following FIDE rules, particularly drawn games following a flag drop. Many people do not realize that there is not a single set of rules. If you're playing rated games, you follow the rules of the rating organization. If you're playing casual games, you're free to make up your own rules (in my casual games, we don't enforce touch-move and we allow blunders to be taken back).

There's a reason why the USCF requires a tournament director to have a rule book available at tournaments. There are many rules, and the rules have subsets. Also, the rules change frequently.
I would never depend on my memory for the details of a specific rule. Although I know the basic rules, there have been times when I forgot, or didn't know about, some obscure rule that isn't normally encountered.
There is a problem that most players learn the rules by word-of-mouth, they never bother to read the rule book. Many times what they are told is wrong or outdated.
And then there's the case of a 2008 Women's World Championship game where the arbiter ruled a game a draw (one player's time ran out) because checkmate wasn't forced. He was overruled on appeal because the rule is checkmate by any series of legal moves. He should have referred to the rule book rather than relying on his memory.
https://en.wikipedia.org/wiki/Women's_World_Chess_Championship_2008
I never knew how to claim draw by three-fold repetition until I accidently repeated the moves three times.

woton wrote:
There's a reason why the USCF requires a tournament director to have a rule book available at tournaments. There are many rules, and the rules have subsets. Also, the rules change frequently.
I would never depend on my memory for the details of a specific rule. Although I know the basic rules, there have been times when I forgot, or didn't know about, some obscure rule that isn't normally encountered.
There is a problem that most players learn the rules by word-of-mouth, they never bother to read the rule book. Many times what they are told is wrong or outdated.
And then there's the case of a 2008 Women's World Championship game where the arbiter ruled a game a draw (one player's time ran out) because checkmate wasn't forced. He was overruled on appeal because the rule is checkmate by any series of legal moves. He should have referred to the rule book rather than relying on his memory.
https://en.wikipedia.org/wiki/Women's_World_Chess_Championship_2008
👏👏👏☝👍
Finally someone CLEVER.
Now you said you know basic rules but not ALL the rules that's very smart answer.
I'm laughing at people above who think they know it ALL rules, life , people , basically everything haha . What can I say .... 🔞
So many people "THINK" they know how to play good chess, yet they don't know all the rules. That's just funny to me, shouldn't you learn the rules first before competing in any sport?
Let me ask you, do you know all the chess rules WITHOUT internet help of course ?