Level 50
This is the hardest level of the game, and it's so hard nobody's solved it without hints--myself included. (Yes, by the time I finished building all the levels, I wasn't sure how I had made it either.)
two benders are used twice
the initial beam should be bounced right with a bender
form two rectangles, one at 45-degrees with the other, of roughly the same size
every target is hit by exactly one beam
ignore the colors first and just try to hit all the targets