44e3c604__3___Game_Guide___Jellyneo_net__Strategy
[Name of Boulder] Timer Boulder [Use of Block] Counts down from 15 seconds and then changes all adjacent same-coloured blocks to an Indestructible Boulder [Strategy] 
Try to remove these blocks first in order to avoid the pesky Indestructable Boulders.
Destruct-O-Match 3 | Game Guide | Jellyneo.net
Strategy