2nd Cambridge International Open

[Roger de Coverly]

So why is there such a big difference?

Did you mean 2438 v 2400? It's not such a big difference and it's what you get if you use a linear approximation (Clarke / rule of 400 formula). The approximation is that results between players 400 points apart are treated as 100%/0% whereas using the probability distributions underpining the Elo tables there is a non zero probability of a draw or win for the lower rated player.

[IM Jack Rudd]

The crossover point's around 200 difference; below that, the Elo system gives higher expected scores than the Clarke system for the stronger player, whereas it's the other way round for higher differences.

[IM Jack Rudd]

Whatever it is, here's the relevant information: https://handbook.fide.com/chapter/B012024

To get an IM norm with 6/9 requires an adjusted ARO of 2325 or higher, whereas for a score of 6½, it needs to be 2284 or higher.

[Mick Norris]

Fava needed to have played at least four players who weren't Italian (he did), three players who weren't English (he didn't), and players from two non-Italy nationalities (he didn't).

The Lithuanian FM Aras Vardanyan might be a good example of how it was possible to meet a good mix of federations in this tournament:

https://chess-results.com/tnr811519.asp ... =30&snr=23

IM Wachinger met 5 federations none of which were his own, included in which were 4 GMs, but was short of a GM norm

[Mick Norris]

Adams first on tiebreak?

Yes, (according to the Cambridge International Chess Open Facebook page).

chess.com article, mostly about Bodhana

The 2024 Cambridge International Open, which concluded this Saturday, marked yet another success for England's veteran GM Michael Adams, who defended his title from the previous year. The 52-year-old secured a 7/9 score and took the £1,500 ($1,900) first prize on tiebreaks ahead of GM Sergei Tiviakov and IM Martin Haubro

includes a photo of the winners