Having set the stage for the debate, let’s step back from generalizing the worthiness of TWIC’s collection of tournaments on the basis of just one game. We can agree to applying a general filter, if need be, for very low average rated games. Well, those that don’t involve at least one high rated player – that is, if we want to have complete and accurate leaderboards for general Swiss tournaments.
(Swiss tournaments will sometimes pair a very strong player against a weak one in early rounds. Presumably, we would want to keep all the games of the top, say, 10 finishers from a tournament. Wouldn’t we?)
Let’s look at the content of a recent TWIC download, TWIC1104. We can load the PGN into side, and then use the Tournament Finder window to obtain a view of all the TWIC tournaments. SCID 4.4 allows us to sort on the average ELO for each tournament, and so we obtain this view:(Click on image to enlarge)
There are 2627 games from 30 tournaments, covering the period from 2015.10.16 to 2016.01.03. The average rating spans from 1782 to 2529 ELO (2785 ELO if playoff match is allowed). Of the 30 tournaments, 26 have an average ELO of 2100 or better.
Let’s compare the recent additions of <CG> over the same period to see if all of these tournaments are included, or if TWIC is missing any. To do this we must refer to the <New Tournaments> page on <CG>: New Tournament Index.
One thing immediately obvious is how difficult it is to navigate through <CG>’s tournaments. The master list in the link has no indication of when the tournaments took place, nor the number of games or players. Compare this to the SCID <Tournament Finder> window above:
Let’s pick a sample tournament to see what, if any, additional information is presented. This example actually has now information than most, 16th Poikovsky Karpov Tournament (2015).
I’ve truncated the page, not showing the game list or kibitzing. That doesn’t matter for our purposes, we’re interested in the biographical data for the tournament. (Note however, that the kibitzing will sometimes include this, but more often than not will not).
There is very little info – no date or site location. We do get a list of the players, and for this case, a link to the Official site. We also have the number of players and number of games. All of which is good. But, we really are left in the dark in determining when the tournament took place, a basic piece of information needed for the comparison with TWIC.
I suppose I can assume some chronological ordering of the tournaments on the New Tournament Index page – but this is a bit of a kludge. I suppose I could assume TWIC is more complete, and look for missing TWIC tournaments… perhaps this is the best first approximation.
Here is a list of <CG> tournaments, back-dating till the beginning of November, as far as I can tell, for the most recent 12 entries:
2016.01.02-2016.01.12 -- New Zealand Open (2016) 2015.12.28-2016.01.05 -- Hastings Chess Congress 2015/16 (2015) 2015.12.19-2015.12.26 -- Nutcracker Match of the Generations (Rapid A) (2015) 2015.12.19-2015.12.26 -- Nutcracker Match of the Generations (2015) 2015.12.19-2015.12.29 -- Qatar Masters (2015) 2015.12.05-2015.12.16 -- London Chess Classic (2015) 2015.11.24-2015.12.01 -- China Chess Queens (2015) 2015.11.24-2015.12.01 -- China Chess Kings (2015) 2015.11.13-2015.11.22 -- European Team Championship (Women) (2015) 2015.11.13-2015.11.22 -- European Team Championship (2015) 2015.11.04-2015.11.08 -- Barcelona GM International (2015) 2015.10.26-2015.11.01 -- Bilbao Masters (2015)
Now remember, we’re looking for TWIC tournaments missing from <CG>. For instance, both Hastings and Nutcracker can be found on TWIC, but not in release 1104. Let’s show the TWIC1104 tournaments, marking those found on <CG> in blue:
Date Players Games Elo Site: Event Winner 2015.12.29 2 2 2785 Doha QAT : Qatar Masters TB 2015 2015.12.29 130 65 2529 Doha QAT : Qatar Masters Open 2015 2015.12.27 34 41 2510 Cleveland USA : Pan-Am Intercollegiate 2016.01.02 10 20 2445 Spoleto ITA : 1st FideAcademy GM 2016 2015.12.29 2 1 2426 Groningen NED : van Foreest vs Ernst m 2015.12.28 44 46 2420 Zurich SUI : 39th Zurich Christmas 2015.12.28 37 61 2413 Boeblingen GER : 32nd Boeblinger Open 2015 2016.01.02 56 60 2407 Roquetas de Mar ESP : 27th Roquetas de Mar Open 2015.12.29 18 63 2401 Fagernes NOR : TV 2 Chess International 2015.12.29 123 118 2374 Al-Ain UAE : 4th Al Ain Chess Classic 2015.12.28 35 48 2360 Aschach AUT : 24th Donau Open 2015 2015.12.28 75 102 2359 Las Vegas USA : 25th North American Open 2015.12.27 56 80 2339 Lorca ESP : 4th Lorca Open 2015 2015.12.28 93 291 2327 Stockholm SWE : 45th Rilton Cup 2015-16 2015.12.26 28 45 2322 Litomysl CZE : Czech Christmas 2015-16 2015.12.29 31 40 2318 Pontevedra ESP : 4th Tilve Mem 2015 2015.12.29 16 15 2312 Paderborn GER : 12th Schachtuerken Cup 2016.01.02 127 181 2287 Schwaebisch Gmuend GER: 28th Staufer-Open 2016 2016.01.02 34 68 2280 Melbourne AUS : ch-AUS 2016 2015.12.27 106 408 2278 Krakow POL : 26th Cracovia Open A 2016.01.01 58 170 2219 Basel SUI : Basel Masters 2016 2015.12.05 53 48 2210 Germany GER : Fraubundesliga 2015-16 2015.12.28 70 95 2207 Groningen NED : 53rd Groningen Open 2015 2015.12.28 88 283 2144 Hastings ENG : Hastings Masters 2015-16 2016.01.02 66 70 2111 Auckland NZL : 123rd ch-NZL Open 2016 2016.01.03 89 75 2101 Bosnjaci CRO : 21st Bosnjaci Open 2015.10.16 6 30 1987 Kiryat Ono ISR : ch-ISR QF GpB 2015 2015.12.29 59 54 1952 Arco ITA : 6th Arco Christmas Open 2015.10.16 6 30 1913 Kiryat Ono ISR : ch-ISR QF GpA 2015 2016.01.02 7 17 1782 Sofia BUL : 159th MGU Open 2016
What is the criteria used by <CG> for including a tournament? It appears to be fairly arbitrary, since many higher rated tournaments are omitted, whereas fairly low ranked tournaments like Hastings and NZL-Open are included. Certainly, user requests, and possibly tradition, account for their inclusion.
But what about a middle-of-the-run tournament like <45th Rilton Cup (2015)>?
It’s included in other years, i.e. 2002, 2006, 2007, 2009, 2013 – CG Rilton Cup tournament search
Rilton Cup (2013) Rilton Cup (2009) Rilton Cup (2007) XXXV Rilton Cup (2006) 32nd Rilton Cup (2002)
This coverage strikes me as haphazard. All of the missing years prior to 2015 can be found on 365chess.com, with perhaps the exception of 2010 (I couldn’t find it there, but TWIC does have it):
365chess.com coverage of missing tournaments: 44th Rilton Cup 2014-15 XLII Rilton Cup XLI Rilton Cup 2011-12 38th Rilton Cup 2008-9 Rilton Cup 35th Rilton Cup 34th Rilton Cup 33rd
One can see that <365chess> also has the same problem with inconsistent nomenclature that <CG> has, as concerns systematically naming each tournament in the series. Personally, I would prefer something like <1st Rilton Cup (1971)>.
Ah, but that’s really an aside. To reiterate, the main point of this posting is to show that <CG> tournament coverage is lacking. It’s lacking several strong tournaments that it should include (e.g. Pan-Am Intercollegiate, FIDEAcademy, etc.). And for the tournaments it does include, it lacks basic biographical information.