English Chess Forum

Certainly I have no idea who this thread refers to, or whether the relevant tournament is in the UK or elsewhere in the world.

Finally, how many ~42move games you have in your databases without a single mistake (no matter how big) or just two inaccuracies? I have none out of ~300. (I am talking about my own games) A quick look gives an answer of several, as I found three out of the first 20 or so I looked at from my liches...

Without the games, it isn't possible for us to say though. Low numbers of inaccuracies occur in games where one side gets a big advantage early on. I've seen games by my <70 ECF son with 'no' inaccuracies or mistakes and very low acpl, because he was a queen up from move 6 and then that entirely dis...

Could the reminder for this year be moved to a new thread? The original post (to my mind) now unintentionally strikes the wrong notes since the tragic death of Arianne Caoili earlier this year.

But I have picked up snippets (perhaps wrongly misinterpreted) that at least some of the statistical cheat detection methods are not based on absolute strength of performance (eg. high correlation with computer generated analysis) but relative levels of performance against expectation. And I just f...

Picking up earlier comments, three accounts towards the top of the U8 boys gigafinal have been closed by lichess. https://lichess.org/swiss/FfnK1EKK Looking at the games, I don't believe any involved computer assistance. But the top of this age group is around 120/130 ECF and it doesn't need a compu...

The linked article is very nice and clearly written; to me it really hits the nail on the head in terms of posing the question that has to be answered (or the case for the prosecution). There's one little statistical slip made though(ignore this if you dislike pedantry or discussions of p-values!). ...

The opening theorist Ruy Lopez de Segura (1.e4 e5 2. Nf3 Nc6 3. Bb5N ) was of course a Spanish priest.

I had understood that certain GMs (Nakamura's name has come up here) are contracted to chess.com, in that there is some sort of exclusivity in terms of their streaming etc. Nothing wrong with that, but statements about how advanced the methodology is can sound more like product endorsements than exp...

Aside from the 4NCL 45+15 games, the player only played rapid or blitz games on the site - so the implication is that the computer assistance was at a time control of 10 minutes or less. That strikes me as unlikely, although I accept it's possible. Computer assistance is possible at 1+0 bullet with...

Online correspondence chess is entirely sui generis though This may be so, but that does raise the question of how and why it's possible to decide that people's moves are exceeding their strength in that field Indeed; I have no idea how one could construct or defend a system that could reliably pic...

That appears to have been Justin Horton's experience when playing "Daily" on chess.com. In his case, the theory wasn't that obscure, living as it did in his bookcase. It was enough for the chess.com computer to make allegations on a relative handful of games. It should not be any surprise that rece...

Michael: I don't know whether the distribution used by Ken Regan (for move matching rates) is normal. But here I don't think this is key, because what matters is the probabilities of rare events, and given he has analysed pretty much every major tournament that ever existed (or claims to) he can tak...

The graph above is the real deal; saying something is 2 sigma, or 3 sigma, or 4 sigma, is a measure of how often something is likely to happen. Let me put another (identical, but differently phrased) scale to this: Suppose chess player Knightie McKnightFace plays six tournaments a year and has a sta...

Joe, It is important to note that we are talking about matching a computer's moves at the same rate as a 2300 as distinct from playing at 2300. So Magnus Carlsen is better than me, not only because he plays more computer moves, but also because he is better than me at knowing when it is important t...