I've been solving a couple of these.. I made it through all the easy levels without ever having to consciously divide the whole grid into specific regions (at least not consciously);. I've seen that this is a common technique, but it confuses me even more when trying to apply. Now I'm trying the hard levels but I am big time stuck. Can someonePlease solve this for me step by step and explain how I need to wire my brain in order to solve this??
I will be forever grateful.