Chess rating system

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Avatar of Sinclair_Ian77
Karpark wrote:

A 1743? As I write, 100 below you exactly and my rating exactly! 

Yeah, just about. He is actually 1786. But my rating is due to rise again. After a couple of games i am due to win. One is an interesting king and pawn end game against a lower rated player, whom admittedly has played rather well.  It emphasises my point nicely though. 

Avatar of Martin_Stahl
Karpark wrote:
osiasz wrote:

Hey, I'm new to blitz chess just wan to know if I have capturedd more pieces of opponent but my time gets over first.. Do I win or lose?

You've lost, I'm afraid. You lose if you're checkmated, you resign or you go over your alloted time. All regardless of how much material (number and value of pieces) you have captured. The value of the pieces is purely a heuristic guide to how well you are probably doing but the amount and value of material you have or had compared to your opponent don't mean doodly squot if you're mated or your time is up (assuming you are playing blitz or another time-controlled version of chess). 

 

That is generally true but you can also get a draw if your opponent doesn't have sufficient material to mate.

Avatar of slowdeath22

Talking about sufficient material, I have a request. Could you please fix the sufficient material things so that if it is something like bishop vs pawn, knight vs rook, etc and your opponent loses on time, you win the game? Thanks.

Avatar of SmyslovFan

I think the site uses USCF rules rather than FIDE rules to determine "insufficient losing chances".

Avatar of Martin_Stahl
SmyslovFan wrote:

I think the site uses USCF rules rather than FIDE rules to determine "insufficient losing chances".

 

It's a variation on USF rules. There is at least one instance where it doesn't match. It's easier to programmatically determine mate is not forced than it is to determine that a help-mate might exist.

Avatar of shaun

Correct, we based the immaterial draw rule on USCF.  However, since we have over 1 million games on our site a day, having a TD on hand to review each draw isn't very feasible.  For that reason, the draw rules are a little bit more simple!  I hope this makes sense.  

Avatar of SmyslovFan

Sounds like in this case, using FIDE rules would make more sense. I think it would be easier to program.

Avatar of Martin_Stahl

Not sure coding to figure out if mate is possible in a multitude of material combinations is easier than a check to see if the side with time has a subset of material.

Avatar of SmyslovFan

I just discovered that FIDE treats initial ratings differently than USCF does. 

I scored 1.5/2 against an average rating of 1981. According to USCF, that's a performance rating of 2223. According to FIDE, that's performance rating of 2001. I know, it's only two games, but that's quite a difference.

Avatar of Rumo75

No, that's certainly not correct. You are not expected to score 75% against opponents 20 points lower than yourself (that would be the consequence from these numbers.) Carlsen would have lost his no.1 world ranking spot for not beating Anand like 7-1.

I think there are more plausible explanations. Are you sure that these ratings averaging at 1981 were FIDE? Maybe one or both were USCF, and significantly lower?

Avatar of SmyslovFan

My new FIDE account only has two games, and my official performance rating was 2001 against an average rating of 1981. (As you know, I don't get an official rating until 5 games have been played.) USCF's rating calculator came up with 2223. I'm guessing that there is a built in deflation for the first five games, but that's just a guess.

Avatar of SilverCrusader721

 Also Vish, Queens are worth 9 points. Not 10.

Avatar of Rumo75
SmyslovFan hat geschrieben:

My new FIDE account only has two games, and my official performance rating was 2001 against an average rating of 1981. (As you know, I don't get an official rating until 5 games have been played.) USCF's rating calculator came up with 2223. I'm guessing that there is a built in deflation for the first five games, but that's just a guess.

Strange. Well, I have no idea what happened there, but from general (and rather long) experience I can tell you that there shouldn't be a large difference between FIDE performance ratings and the USCF performance ratings you calculated. If you score 75%, the performance should be about 200 points above the opponents' average rating.

Avatar of slowdeath22
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Avatar of SmyslovFan

Rumo, a friend of mine posted how FIDE calculates initial ratings. Apparently in some Swiss situations when there aren't enough games to create an initial rating, they take the average rating and add 20 points for every .5 above a 50% score. I really don't quite understand it. It's possible that they go back and recalculate the ratings after several games have been played. It's rather confusingly written.

Avatar of Rumo75

Some sort of recalculation would certainly make sense. Otherwise I could pay (well, I don't have enough money, but you get the idea) Magnus Carlsen to play a long match with my dog Joey. Joey would lose 0-10, and end up having an initial elo rating of 2653, which would make him not only the strongest dog, but also the strongest non-GM in the world! (The norms might be harder to achieve.) 

Avatar of JuergenWerner

How much is FIDE per year?

Avatar of Martin_Stahl
JuergenWerner wrote:

How much is FIDE per year?

 

If you are asking about OTB, only national federations pay to be members. If you are asking about their online site, just go check it out.

Avatar of ponz111

Even if your dog lost 10-0 vs Magnus--that would be quite an achievement for your dog to learn to play chess and so he/she would deserve the highest rating for dogs.

Avatar of Rumo75

Not really. He would simply lose on time 10 times, probably falling asleep next to the board or trying his teeth on one of the pieces.