This level it's impossible to win.
I saw on youtube that this level had 20 yellow gems to get with 25 plays, now it has 16 times to play to get 28 gems.
The 3 rocks just need 1 hit to dissolve, now it needs to be hited 3 times to solve.
The keys are now 5 or 6 to open the other part of the game. Before it was 2 or 3.
