Level 49

I am at level 49 and have tried everything to open the blocks on the chest at the very top. Can anyone give me some help?

Help! I am stuck on this level also. Can someone tell me how to break the blocks on the top. I have tried to use everything.

In fact, it is'nt so difficult.
Stay in the top and collect all the required juwels, so that the ghost de 4 frozen stones opens. Stay in the beginning away from the two arrows!
After opening by the ghost, collect all the stones below and open the arrows. They destroy the 4 separate stones.
Simple! Good luck.

And if the arrows are gone? I have played this level for more than an hour and I'm getting nowhere (I'm playing in relaxed mode) -- I have long since collected the jewels but the four blocks at the top don't move and aren't affected by the gameplay underneath. Is there any way out of this? Or am I just going to have to start from the beginning, or ditch the game entirely?