Another example for false positive in cheat detection

Hi lichess-team,

here is a tournament game from two of my team members, which was aborted in move 8 due to an over-sensitive cheat detection.


I have analysed the game and seen, that he always made the computer move. The problem is, that these moves were not that hard to find for a decent human player.

Can you do something to adjust the detection algorithm to improve the future gaming experience on lichess?

You might wanna not copy the game position into the Analysis with engine on, whilst the game is still going.

Looks like your team member cheated

Its pretty stupid of you to imagine the algorithm is faulty because of this. Your team mate cheated by using the analysis board during the game.

Cheat detected cares only about whether you're running the engine on the position, not whether you're following its suggestions. I'd call it more of a mousetrap than an algorithm. Don't fool around with the engine while playing = this will never happen to you.

Most people just naturally don't do it. Most of the rest know well enough not to do it again after getting caught once.

It triggers the auto-abort when it detects that a player has been playing out several moves on the analysis board, live as the current game is being played out. It's not just a single position that causes it, meaning the chances of a coincidence are astronomically low

As the others have said, having the analysis board open whilst playing an active game is indeed cheating.

@IsaVulpes
@RapidVariants

the detection system acts in a simply neutral way on the basis of a clever consideration of an extremely probable cheating condition; more than once I've detected a cheater by manual analysis on his different subsequent games; in those cases the elements were

#1 almost perfect correspondence between machine and human moves

#2 0 blunders, 0 mistakes etc

I think this should also be implemented, not to mark instantly a player as a cheater, but just to give a circumstantial evidence for which the administrators then may proceed with further investigations. This automatic process would save me from expensive lost of time and energy!