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.
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.