Try This

This puzzle is extremely hard. Luckily, I solved it in a 300 seconds. Try if you dare. Tell me how much time it took you.

http://en.lichess.org/training/26030

249.1 s. I failed, though.

200-250
Firsst time failed though

I had a very good feeling what the move was then decided to play queen check. I then went back to my instinct move and it was correct. I was actually somewhat surprised. I did it with two tries. My instinct moves are pretty good sometimes. But I cannot rely on it alone.

Solved it, but time does not show up when you did it before.
Feature request! ;-)

I flopped this on the first attempt. Since you asked, it took me 1200 seconds after so many attempts. Thank You ApplePie5453. bye friends.

94 seconds, correct solution.

30 seconds, correct solution