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From	Message
Posted by sharpgate mailcafe.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 mailcafe.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 mailcafe.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 mailcafe.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 mailcafe.net 4/15/2008 04:25:47 play online chess	Thanks alot, Message: marinvukusic; things are all clear now :) Geert
Posted by sharpgate mailcafe.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 mailcafe.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 mailcafe.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 mailcafe.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 mailcafe.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 mailcafe.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 mailcafe.net 4/16/2008 07:08:18 play online chess	... Message: Good point, that is an inconsistency on my part.
Posted by bonsai mailcafe.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: Leko holds the lead -- Peter Leko, emerged as the likely winner of the Sparkassen chess tournament at Dortmund as Vasily Ivanchuk and Vladimir Kramnik failed again to impove on a 50% score. Leko outplayed Jan Gustafsson, the lowest rated player in the tournament and replaced him as leader. Gustafsson played a quiet line with white and sought simplifications but was outplayed from a level endgame position. Kramnik tried to put one of his positional squeezes on Ian Nepomniachtchi but was unable to make any progress while Ivanchuk had to play very accurately to maintain the balance against Shak Mamedyarov. Loek Van Wely’s disastrous chess tournament got a lot worse in the sixth round as ... Chess boxers slug it out -- A Russian man has been crowned world champion in the novelty sport of chess boxing, a game that requires equal skill at moving pawns and throwing punches. Mathematics student Nikolai Sazhin, 19, competing under the name "The President'' knocked out a 37-year-old German policeman Frank Stoldt, who served as a peacekeeper in Kosovo until recently. The loser said he was simply too punch-drunk to fend off checkmate. "I took a lot of body-blows in the fourth round and that affected my concentration. That's why I made a big mistake in the fifth round: I did not see him coming for my king,'' he said. Berlin is home to the world's biggest chess boxing club with some 40 members and ... Back to the drawing board -- Peter Leko rather predictably took no risks with the white pieces and secured chess tournament victory at Dortmund by steering play into a known drawing variation in the Marshall Attack to the Ruy Lopez. Of course Leko needed the cooperation of his opponent, Dortmunder Arkady Naiditsch but Naiditsch probably felt he had already given his home crowd enough entertainment by defeating former world chess champion Vladimir Kramnik in round three. Leko finished clear first, undefeated on 4.5/7, half a point ahead of the field. Kramnik had a terrible chess event and finished on a negative score after losing a middlegame battle against Vasily Ivanchuk. The position was roughly ...