Elmo_the_Lesser: I hope I'm missing something obvious. I can't come close to solving this puzzle. I've seen the crib sheet with the answer, but as soon as I move anything the clock starts and in five seconds it's over. I'm not that fast anymore. Help?
The clock starts when lightrays leave puzzle center and stops when either:
1)ray touches center once again
2)ray hits its designed spot (which is the point of this puzzle)
You need to carefully plan placement of each pin before even touching it. I.e, blue ray can be solved with single move, but others aren't so easy ;) If it doesn't help I can write down step-by-step solution for you.
Or have I misunderstood and you're talking about second door puzzle (with 5 symbols riddle - although I don't remember any time limit there)?