http://i.imgur.com/68MP7Ng.jpg
I tried various variants just to see what works and what doesn't, and i have absolutely no understanding of why these work, and how the fuck the third one is supposed to work ever.
For 1, literally everything works. It doesn't matter what I do. Why. If the upper symbol makes the 2-block "disappear", why on earth does this show aw correct?
For 2, same thing. The 2 minus blocks delete the 2 block. But a random 3 square big selection counts as correct.
For 3, the symbols aren't big enough to even fill the 4x4 line. Wat
I literally have absolutely no clue about how this shit works, and I wrapped my head around pretty much everything else so far, with I think 7-8 lasers active.