The time runs out at double the average time. You start losing points if you are the same rating as the puzzle and you take longer than the average time. So you should aim for half the timer bar, the full bar is just to cap you at a 20% score if you get it correct.
It's not that harsh, my rating is consistently nearly 300 points above my online rating, 600 over my standard. You probably just haven't memorised very many patterns yet.
The time allowed is based on how long other successful users take, so it was enough for them. I sort of agree with this because I don't think anyone analyses every tactic to the end.
Gain points for retrying? There's no way I'd ever fail a problem if it's one I just attempted.
I believe it is unfair, in that I don't believe it should give partial credit for getting 2 of 3 steps. If you sac your queen correctly but fail to give mate you've just lost your queen and the game.
I am a basic user. I've got my 3 tactics per day that I do religously. I find that the pointing system is very unfair. I am an average player with 1350 in points, but with tactics trainer I struggle to keep over 1000 points.
When I win, I win very little points but when I lose I loose a lot of points. I typically get 6 plus or minus 3 points on wins but I often get -17 (plus or minus 3) on losts. I even regulary get negative points for wins, even for wins I complete BEFORE the time runs out. This is very unfair!
First I should NEVER loose point if I complete the tactics before the time runs out. If you want to penalise people who does not solve the problem before the time given, at least if they solve it after the time runs out you should give/substract 0 point. In other words never loose points if the problem is resolved!
Secondly why you substract so many points when I make a mistake but give so little when I resolve the problem.
Thirdly the time allowed is too short, it is impossible to analyse all the solutions before making a try. Also for portable devices like I use, you are often disturbed making you little chance to win in the time left. Also there is no pause, if I lock the device, when I come back, it's over...you lost 20 points...
Forthly, since we are allowed to retry a failed attemp, we should regain a few points if we succeed the second time.
What do you think?