84 votes
Accepted

Arbiter ignored cheating, and I signed the scoresheet. Did I lose my right to object?

According to the 2017 version of the Laws of Chess, rule 11.10 says: Unless the regulations of an event specify otherwise, a player may appeal against any decision of the arbiter, even if the ...
  • 17.2k
48 votes
Accepted

Anti-cheating: should there be a limit to a number of toilet breaks per game per player?

No, there shouldn't and if you live to be 80 you will probably understand why. A few years ago in a tournament where I was one of the arbiters a 16 year old boy was playing an old guy in his 80's in ...
  • 86.7k
43 votes
Accepted

If Hans Niemann is cheating, how?

The simple answer is that he is not cheating. Magnus just played badly. Had Magnus had proof he would have presented it at least to the arbiter. He didn't. The chief arbiter, Chris Bird agrees with me....
  • 86.7k
33 votes

If Hans Niemann is cheating, how?

I agree with Brian Towers, that the most likely scenario is that Hans didn't cheat (despite his weird behaviour in the interviews), as indicated by an engine check of the game. How would he have done ...
  • 4,838
30 votes

How could one cheat on Lichess?

How could you cheat? This is what the Lichess terms of service say about it: Cheating. We define this as using any external assistance to strengthen your knowledge and, or, calculation ability to ...
  • 10.4k
28 votes

I was playing a tournament and some kids were talking about the game in a foreign language

First, you should inform the tournament director, and let that person handle it. There is a parental instinct that makes me want to just take the kid aside, and say something privately first, but ...
  • 32.2k
26 votes

lichess vs chesscom players

Like I find it easier to beat a 1900 player on lichess than a 1800 on chesscom which is insane! Why is that insane? According to one site, an 1800 blitz rating on chess.com is about equivalent to a ...
  • 17.2k
24 votes

Chess etiquette: Carlsen withdrawing from the tournament

How would you rate Carlsen's actions, relative to your understanding of chess ethics? The ethical side really boils down to the question, "who is hurt by these actions". If it is a Swiss ...
  • 86.7k
23 votes
Accepted

Undetectable semi-cheating?

Yes. You will still be detected just that the site is going to need more games. You are more likely to stay under the radar, but that doesn't mean you won't be caught. Cheat detection has never been ...
  • 22.1k
22 votes

Undetectable semi-cheating?

tl; dr: the stronger you are, the more likely it is that you can cheat in this way and not get caught. Check out this position: [FEN "r2q1rk1/5p1p/p2p1bp1/4pn2/2B5/7R/1PPQ1PPP/2B2R1K w - - 0 1&...
  • 23.9k
20 votes
Accepted

Does taking tranquilizers count as cheating in chess?

The World Chess Federation (FIDE) uses the list of prohibited substances published by the World Anti-Doping Agency. I did not see tranquilizers on the list, although I can't say I'm familiar enough ...
  • 17.2k
19 votes

If Hans Niemann is cheating, how?

Things to keep in mind before reading this: I do not like cheating, and I do not support it in any way. Did he cheat? I do not know, I do not have any proof. Why may he cheat? To beat Carlsen, ...
  • 301
18 votes

Arbiter ignored cheating, and I signed the scoresheet. Did I lose my right to object?

Writing to FIDE will make you feel better but is otherwise a waste of your time. Let's step through and see why. First, getting up and walking around is perfectly acceptable behaviour. Here's what ...
  • 86.7k
18 votes

lichess vs chesscom players

Elo does not signify how strong of a player someone is. Elo signifies how strong a player is in comparison to some community. Assigning a numeric score to rank how strong someone is in chess would be ...
17 votes

How would you determine that the player is cheating in online chess?

Number of screen switches and speed of play are meaningless. If you use these to complain to the organizers of an online chess playing website they will laugh at you. There are two ways to tell if ...
  • 86.7k
17 votes

I was playing a tournament and some kids were talking about the game in a foreign language

Hi Liam and welcome to chess.stackexchange. I am sorry that you had this experience. If this tournament was played under FIDE rules, then the following articles are directly relevant: 11.3.1 During ...
  • 9,967
16 votes

Did Hans Berliner win the world ICCF championship using computer help?

Short of asking a deceased man, I would say that the answer is "no way". He won the 5th World Correspondence Chess Championship in 1965. Computer chess, if it existed at all, was not strong at all. ...
  • 32.2k
15 votes

If Hans Niemann is cheating, how?

I'm surprised so many people are discussing cheating during the game. Most likely that is not what happened at all. What is most likely, I believe, is that Carlsen had a suspicion that his prep has ...
  • 151
14 votes

Arbiter ignored cheating, and I signed the scoresheet. Did I lose my right to object?

A short answer to the title of your question would be that you do not lose the right to appeal against any of the arbiter's decisions by signing the scoresheet. But also notice that you did not use ...
11 votes
Accepted

Can an Irwin Cheat Detector catch a user who is using a Leela chess bot for cheating?

Leela works by performing an exceptionally sophisticated positional evaluation at a relatively shallow search depth, whereas most chess engines work by performing a simple evaluation at as deep a ...
  • 1,679
11 votes

Evaluation bar cheating - how much does it really give, and how can it be detected?

For 1): The player that uses an eval bar will successfully capitalize on opponents' mistakes more often than the player that does not, playing like a higher-rated player in this regard. However, ...
  • 435
11 votes
Accepted

Are there any strict rules which can be imposed on Magnus Carlsen for resigning on purpose against Hans?

Are there any strict FIDE rules for this? Strictly speaking this is an online tournament organized by chess24.com and is not FIDE rated. That means it is not under FIDE jurisdiction nevertheless FIDE ...
  • 86.7k
10 votes
Accepted

Bathroom cheating

"Yes" is the answer according to FIDE. They have published their Anti Cheating Guidelines which highlight the section of the new laws regarding this: 11.3.b. During play, a player is forbidden to ...
  • 86.7k
10 votes
Accepted

How to deal with people getting help on board

What you describe has never happened to me personally, but I would have no qualms of making a complaint in this situation - either by calling the arbiter (in the case of a tournament) or my captain (...
  • 5,717
10 votes

Arbiter ignored cheating, and I signed the scoresheet. Did I lose my right to object?

Is it really that certain that your opponent cheated? The key facts that I extract from your question: Opponent chatted with others on a regular basis I often do this too, and I do not talk about ...
  • 109
10 votes
Accepted

Can you say anything if you see cheating at another board?

You should not address player B directly, it is forbidden to talk to him about his game (it is actually forbidden to talk to him at all, but the spirit of the law is to prevent conversations about the ...
  • 13.8k
10 votes

Chess positions that are easy for humans but near impossible or confusing for computers

One way to fool some computers is to give them a fortress and then offer material to trick them into opening the portcullis. For example: [Title "White to draw"] [FEN "8/8/pr1k4/...
10 votes

Undetectable semi-cheating?

I'm afraid SmallChess's answer and comments above are more a matter of wishful thinking than actual fact. If you manage to catch a few small-time cheaters every now and then, it becomes easy to ...
  • 117
8 votes

Just for fun and curiosity: is there cheating on professional chess tournaments/games?

There have been cheating scandals in top level chess, most notably in 2010 involving French top 100 player Sebastien Feller and in 2012 involving German GM Falko Bindrich. These two scandals involved ...
8 votes

chess.com Analysis "Accuracy" - What score is computer like for a given rating?

I'm a 1400-1500 rated blitz player on chess.com. Looking through my archives, I see that just this month I had a 34 move game, at a 3 2 time control, where I was rated at a 97.4% accuracy. And I know ...
  • 17.2k

Only top scored, non community-wiki answers of a minimum length are eligible