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From	Message
Posted by sharpgate www6conf.org 4/14/2008 16:25:41 play online chess	Subject: ratings Message: Does anyone know how to approximate a 1700 GN rating to USCF rating? Ron
Posted by chuckventimiglia www6conf.org 4/14/2008 19:01:23 play online chess	You can't!! Message: You may approximate it to a USCF CC rating but not OTB.
Posted by taufiq www6conf.org 4/15/2008 00:25:42 play online chess	... Message: Can someone explain what GN, USCF, OTB stands for ? CC is correspondence chess, right ? Thanks in advance :)
Posted by marinvukusic www6conf.org 4/15/2008 00:47:29 play online chess	Translation Message: GN = GameKnot (should be GK) USCF = US Chess Federation OTB = Over The Board CC = Correspondence Chess
Posted by taufiq www6conf.org 4/15/2008 04:25:47 play online chess	Thanks alot, Message: marinvukusic; things are all clear now :) Geert
Posted by sharpgate www6conf.org 4/15/2008 06:33:48 play online chess	Message: this is the issue. 40 years ago when I played on my college chess team I had a USCF rating of about 1500. 40 years later my GK rating is about 1700. Am I getting better or worst?
Posted by chessnovice www6conf.org 4/15/2008 06:48:41 play online chess	... Message: If I were in your shoes, I would take the optimist's route and believe that you are better than you were 40 years ago. That said, I think the GK rating generally inflates the "true" value of your rating ("true" because who's to say that USCF is all that accurate, either?). There's also the possibility that your skill level remained about level. Did you read any chess books over the past few years? Have you gone over many of your games to find where you make mistakes? Do you find yourself noticing more or less inspired moves when you're playing? Either way, if you've played for the past 40 years, I'd find it hard to believe you're getting worse.
Posted by lighttotheright www6conf.org 4/15/2008 21:12:13 play online chess	Message: OTB is different. On GK, you have more time to make the move. Your quality of game should improve because of less time pressure. A 1500 game played on GK is going to look more accurate on average than one played OTB at the presumed same class level. Some people cannot necessarily translate their skills at GK to OTB, nor OTB skills to GK performance. These are different skills sets that are difficult to transfer. Yet, just playing more accurate more often should eventually improve OTB play. It just takes time.
Posted by fmgaijin www6conf.org 4/16/2008 03:30:50 play online chess	Chessnovice: Message: If you doubt the accuracy of GK ratings vs. other CORRESPONDENCE ratings, check out the performance of Cairo's team of GK players (Peace: The Power That Preserves) in the ICCF team championships (see links on his player page) or Rodog's ICCF performances (see links on his player page).
Posted by chessnovice www6conf.org 4/16/2008 04:39:39 play online chess	... Message: I don't doubt the relative strength of their ratings. I'm certain that Cairo's team is very talented. I just know from my personal vantage point... I don't really believe I play at an 1800 level.
Posted by fmgaijin www6conf.org 4/16/2008 04:53:13 play online chess	Still Thinking "Absolute" Message: Even though you acknowledge in the first clause that chess ratings are relative to the population of the rating group, your last clause shows that you are still thinking of "1800 level" as some absolute. All it actually reflects is your position in a particular population of players, because that is all that Arpad Elo's system is designed to show. Thus, one cannot even compare Fischer's 2800 rating with Kasparov's or Topolov's because they lived in different times and even though they played in the same rating system, the population changed as players aged, died, and were replaced. If you hold a GK 1800 rating across some significant number of games and did not get it via timeouts, etc., then you are playing at an 1800 level IN THAT POPULATION.
Posted by chessnovice www6conf.org 4/16/2008 07:08:18 play online chess	... Message: Good point, that is an inconsistency on my part.
Posted by bonsai www6conf.org 4/24/2008 23:53:09 play online chess	Message: And of course you can add or subtract any number you please from ratings. One would approximately expect a 1800 on gameknot is to score about the same against a 2200 on gameknot as a 2000 FIDE versus a 2400 FIDE (i.e. the rating difference means the same thing), at least if their past performance is indicative of their chess strength. However even if the two ratings measured the same kind of skill (which they probably don't exactly), then it would still not be clear which points on the scales correspond to each other. Of course if the rating were comparable, then one would be able to look at players that have both ratings and possibly be able to figure out a reasonable conversion. However as said before we probably have to expect that CC and OTB ratings simply measure two related, but not identical kinds of past performance.
Chess news: Four share the spoils -- There was a four way tie for first at the 9th Karpov Poikovsky chess tournament in Siberia. Alexey Shirov could not hold onto his lead after an eighth round defeat at the hands of the 21 year old Azerbaijani GM Vugar Gashimov who was a surprise winner of the inaugural FIDE Grand Prix chess tournament at Baku earlier this year. Gashimov joined Shirov on the winning score of 5.5/9 and the leading quartet was completed by 2005 Russian chess champion Sergei Rublevsky and 2006 co winner Dmitry Jakovenko. A Volokitin – A Shirov; 9th Karpov Poikovsky chess ... Teenager causes angst -- The top seeds Evgeny Alexseev and Magnus Carlsen met in the second round at Biel with Carlsen black. The teenage chess prodigy managed to stir up huge complications from a quiet position when he broke out of his cramped formation but his opponent, a former Russian chess champion managed to defend himself and reach a drawn endgame despite the invasion of a black knight into the heart of his position. E Alekseev – M Carlsen; 41st Biel Festival (2); Queen’s Indian. 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.Qa4 Bb7 6.Bg2 c5 7.dxc5 bxc5 8.0–0 Be7 9.Nc3 0–0 10.Rd1 Qb6 11.Bf4 Rd8 (11...Qxb2 12.Rab1 Qxc3 13.Rxb7 Nc6 14.Bd2 traps the queen) ... Carlsen is in luck -- A little good fortune for Magnus Carlsen gave him victory over French chess number 1 Etienne Bacrot in the 3rd round at Biel and the lead on 2.5/3. Bacrot’s solid defence to the Queen’s Gambit was working out very well but when Carlsen complicated matters with a dubious pawn sacrifice his opponent collapsed and was lost just a few moves later. M Carlsen – E Bacrot; 41st Biel Festival (3); Queen’s Gambit. 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 5.Bg5 Nbd7 6.cxd5 exd5 7.e3 Be7 8.Qc2 Nh5 (This simplifying and solid line was favoured by Ulf Andersson, it is notoriously hard to beat) ...