The problems with Tactics Trainer

Tactics Trainer has a few problems that need to be corrected:

1.Don't require 100% to pass;

2.It's very illogical to say 0% after not finding the 1st move because you've never tried the moves afterwards.

3.Allow hints

4.Make it work snappily on a 8 KB/s internet connection

5.Don't base the amount of time and rate of countdown on the # of moves; base it on the difficulty of the problem

6.Allow for more than one solution.