Tactics Trainer Rating

How does it work? Sometimes I get puzzles right and get anything between 6-14 points in rating, but it seems that whenever I get one wrong it usually takes between 13-16 off me. Just curious as to why its so harsh?

It's based on how quickly you solve it - you get a percentage score afterwards. I think it also depends on the difference between the problem rating and your rating.

If you get no moves right, it's always 0%, usually a 14-16 point loss.

If you get every move right very quickly, you get 100%, usually a 14-16 point gain.

If you get every move right but very slowly, you get 20% (losing a few points).

And then everything inbetween.

Ah okay thanks a lot. I was sort of expecting it to be like chess ratings, in that the points gained/lost were in proportion to the difference between your rating and that of the puzzle but that doesnt seem to be the case 

I understand losing a few points for doing it slowly. But why the points are taken off when you still solve a problem within the alloted time?

Also, each time I am given an exorbitant amount of time (once 11 min!), those problems tend to take me often less than a minute to solve (and I've been strugling to get my TT rating over a 1000!). I understand that we all think differently, but I do wonder where such "slow" problems come from.

The time allocated for each puzzle is double the average time it has taken for people to solve it.

When I see a puzzle with a very long solve time, I often think someone has left it open in their browser, upping the average time. But that's only my opinion.

Thanks, And... That would explain both issues. 

That's just about right, except that if you move very slowly, you lose percentage according to how hard the move is