I think I'd like a hint.
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I now believe that the decoy needs to go at either 1 or 2.
1 seems better from a roach attraction standpoint, but gives me problems with snake driving.
2 slows the roaches down but gives me more control over the snake.
but...neither one actually lets me do what I really want to do, which is use the snake as a blocker to keep the two lower golems from coming up.
Here's what I do that has seemed most promising:
1) Drop decoy at 1
2) Move as far north as I can and wait, turning sword south and witing for the snake's head to draw even with the last non-door block on the wall beneath it.
3) head into the force arrows and down to kill the roaches.
4) turn sword back to...nw or w. Not sure which works better.
5) head west
I think that I'm on the right track, because if I continue on and hit the first orb, I get it with no moves to spare, which makes me think that I'm pretty close to the solution.
But I can't see it. So I'm guessing I'm missing something.
I've tried placing the decoy at 2, which allows me to wait on the force arrows and drive the snake west from closer and one row lower, but I can never get the snake to come far enough east.
(I'd really like to put the decoy one space BELOW #2, but there's that inconvenient eyeball there.)
Rheb had made the room, but at the time he couldn't complete it. He thought it was possible, but he didn't know it until I compleated it.