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From	Message
Posted by sharpgate blitzbrain.net 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 blitzbrain.net 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 blitzbrain.net 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 blitzbrain.net 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 blitzbrain.net 4/15/2008 04:25:47 Play online chess	Thanks alot, Message: marinvukusic; things are all clear now :) Geert
Posted by sharpgate blitzbrain.net 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 blitzbrain.net 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 blitzbrain.net 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 blitzbrain.net 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 blitzbrain.net 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 blitzbrain.net 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 blitzbrain.net 4/16/2008 07:08:18 Play online chess	... Message: Good point, that is an inconsistency on my part.
Posted by bonsai blitzbrain.net 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: Ivanchuk Holds Lead at Amber -- Vassily Ivanchuk of Ukraine, is proving to be the most intrepid player at the annual Amber chess tournament. He has yet to lose a game and, heading into the second rest day, he has a one point lead over Magnus Carlsen of Norway, the world’s top-ranked chess player. Boris Gelfand of Israel and Vladimir Kramnik of Russia are tied for third, a half point behind Carlsen. Carlsen took the lead in Round 6 by beating Gelfand 2-0. (The participants play a rapid game and a blindfold game against each of the other competitors.) It was the fourth time in the tournament that Carlsen had won both games in a match. But, in Round 7, Carlsen lost 1.5-0.5 to Vugar Gashimov of Azerbaijan, while ... A saving grace -- The 19th Amber Blindfold and Rapid Chess Tournament at Nice is proving to be one of the most entertaining in recent memory with the traditionally high standard of play complimented by fighting chess and a high proportion of decisive games. After seven of eleven rounds it is ‘Mr Amber’, Vasily Ivanchuk, the only chess player to have competed in all 19 Amber tournaments, in the lead. Ivanchuk was neck and neck with world number one Magnus Carlsen until the latter surprisingly lost to Vugar Gashimov in the blindfold and then was fortunate to avoid defeat in the Rapid game after throwing away a big advantage. See main image for Carlsen’s save in the endgame. ... The f-pawn, part 6: how would you take on Kasparov? -- In this world-championship game, Black has a very big decision to make. Kasparov-Anand, World Chess Championship 1995. Black to play. RB What better way to finish our survey of the f-pawn push than with a world chess championship game? A Scandinavian defence too, which we also took a look at in a recent series of columns, though I don't remember this variation. White's knight looks to have found a powerful and well-supported post, and an exchange of knights on e5 – 1…Nxe5 2 fxe5 – would leave White with a very menacing pawn wedge and the semi-open f-file for his rooks. So we won't be trying that. What else have we got? Say Black castles, which ...