Figures on board are not shown in puzzles and in games with computer.
Look at the picture
http://img.image-storage.com/975292784/797c2f098f284.png .
There is no piece in the field h7. But Bishop from h7 moves to g6 is the best move!!!
That's weird man, I tried here and it's ok, I see the bishop.
Maybe your page didn't load all the stuff this time
Maybe stockfish is still recovering from the AlphaZero's stomp
The error happend less then 5 times.
But it happens.
Why should i lose my points because of site errors?
I have got also the srceen, where the queen is not shown since starting position in game with Stockfish 2200.
It is the site error.
I think, that "josevitor91" can not see the puzzle and can not resolve the error by returning points to me and stop error to appear.
I think, that only administration of the site can load exact puzzle.
The error is not in the exact puzzle, the error is in the site code.
Resolve the error in site code!!!