You can read http://www.chess.com/tactics/help.html#rating for more information on how the Tactics Trainer ratings work.
Tactics Trainer
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Aug 1, 2008
0
#3
can you be more specific about your questions? :) which numbers? what scenario?
Aug 1, 2008
0
#4
Patzer's link helped a lot. (Thanks!)
But I do still have questions.
On one problem (0029883), I got 95.6%. Ok, but what would 100% have done to my rating? I'm having trouble relating the percentage to my rating. Also, according to the help file Patzer sent me to, I think the problem dropped 55 rating points, if I'm reading that correctly. If I understand the math correctly, that implies a high RD for the problem? Even after 262 attempts?
Can someone enlighten me? What do all the numbers mean?
For example -- there is a problem rating, and then a number in brakets after it. It often roughly corresponds to the change in my rating, but in the opposite direction. Did me solving or not solving a puzzle honestly change the rating of the puzzle by that much?
There are other numbers as well. My rating is obvious, at least as an end result. But if my rating is 1300, and I get 66.7% on a problem rated 1100, and I do it in 1/4 the average time, and a train leaves Cleveland at 6:30 travelling....
I'm a bit of a math geek, so I may understand the answer somewhat, and am just really curious as to what's going on?