ewwwa

I must confess, took me some trial rounds until I realized that I could move anywhere, not only straight up/down or left/right. After that, I'm hooked    

ewwwa

My tips for playing this game is to adopt the strategy according to the random placement in the beginning.

I always try to develop on the square blocks that are almost grouping themself into a row already from the start -> and not to forget about the oblique rows, often enough these rows are like "magic" opening up blocked areas...  

Also, I try to have more than one line building up to a full row giving me as many options as possible to place that very last square whenever given the opportunity. Push away those square that are misplaced to clear off the area from odd squares that quickly cut off your free space of moving around.

Once you get started, it's a really fun game especially since there is no stressing time limit

Best of luck!