The site only handles a single line. If a tactic truly has multiple good solutions, you can report it for the site to look at it.
Tactics trainer ?????
For example i played bh2 here and "failed" the puzzle...Of course qh2 is checkmate right away but i should not lose points on this !
Qh2 is not immediate checkmate. After 1. ...Qh2 there will be 2. Kf2 Bg3#. 1. ...Bh2+ leads to checkmate after 2. Kh1 Bg3+ 3. Kg1 Qh2#. Bh2+ takes one move longer to checkmate. They are looking for the fastest solution. That's why your solution was rejected.
Alright so ive been doin tactics here for 20 mins and i lost points on 3 problems where i had to do faster check-mates?? Like wtf ... If u see a checkmate u should not lose points becouse u didnt go for a faster one !! Plz fix this!