making illegal moves in chess

 i am playing against a person named  Ganedzi

he made an illegal  move  and  castled thru  a queen check

i told him thru  CHAT,,HE MUST RESGIN..because of this move..

my understanding is no castling can be done wihen an opposing player has piece in place  from either side of the king

I mean find a better opponent. He doesn't have sportsmanship.

I looked at the game.  It was a legal castle since the king did not move through the threatened space.

The chess.com program does not permit illegal moves, so if something happens you don't understand, you might want to research first before you jump all over the other player.

https://en.wikipedia.org/wiki/Castling

True and true.

I am the other player.   I would have been glad if I had found a bug in chess.com and would have resigned kindly!   However, if we refer to the holy Fide Law: Article 3.8.b.2.a. Everything looks fine.

https://www.fide.com/component/handbook/?id=124&view=article 

Most illegal moves can not be played on chess.com, but I have played a couple of games where illegal moves can happen. I assume a bug or glitch can make this possible.

Any examples?

I moved a pawn to capture, which put my king check. I resigned two moves after, when I noticed my king was still in check from two moves prior. But the reality is that these illegal moves are exceptionally more rare than some people say.

Not possible

Link to the game?

The only illegal moves I've seen any communication on were on an older version of one of the apps and it was only on games vs bots