Draw a straight line through the middle of the puzzle, to split the numbers into two balanced halves.
You can Print out sheets of the puzzle, or Play it in your browser

-=-=-

How to Play

Count up each cluster, jot down their totals, then draw a single line that passes through the middle of the puzzle, so that each half contains the same total.
Sometimes there's more than one solution.

What I Didn't Do

Check that the "Reveal" was working, and then had to spend about 20 minutes fixing the game, just now, because even though it was "finished" on Friday, it was broken.. D'oh!

... Not much to say here, to be honest.
I've tried to pad this "blog" out as much as possible, but really, there's not much to say.