What mean "cheatdetected"??

Surprisingly, I find myself the winner of a game, but not because of my opponent's abandonment, but because of "cheatdetected"(?). What does that mean? Has my opponent cheated? I analyze the game and, although my opponent has always had an advantage, he has also had a couple of mistakes. The game is this: lichess.org/7e2ff4dQYvH6

@Francesc_Vicent Cheat detected means that your opponent cheated.

This persons explanation is better than the one I usually give:

lichess.org/forum/general-chess-discussion/no-ban-for-cheat-detected-losers-just-an-auto-resign-why#7

It means that your opponent was dumb enough to put the same exact position into the analysis board on lichess using the same account.

your opponent used opening explorer

The "cheat detected" message means that your opponent had the analysis board open while playing the game with you (of course, not the engine-less one that is allowed in correspondence games). They might not have played any computer move, but this is enough to interrupt the game and give you the win. However, this doesn't automatically result in them getting flagged as TOS violators, I guess the offender only gets a warning.

What move did he cheat

> What move did he cheat

move 27.

There is no move 27