×
I start by killing all but one goblin. Then I chase it to the top pressure plate and run to the door at (16, 13) just before it closes. Before this, I need to stay on the row 13 on key turns to keep the serpent looping at the (28, 13) to (30, 14) area. I can just manage to chase the goblin and make it to the door if I move just as the serpent passes the corridor opening. No matter how the other serpent is positioned, I always end up activating the Fegundo on the turn with the wrong parity.

×At the start of the room, the Rattlesnake becomes trapped. It will only start to move again when the door it's at is opened.

×
As of 09-08-2014 at 07:33 PM, I Am The 66th Skywatcher!!

Also, I am eager and able to test ANY works in progress you might have.

×What "parity" means in this case is, an unobstructed snake will move from a white tile to a black one or vice versa every turn. So, if you never stop a snake from moving, it will always move on white tiles on odd turns/black tiles on even turns, or vice versa, depending on which type of tile it started on.

The intended way to break parity is to shrink the four-tile snake before crossing the force arrows. It's also expected that you kill all but one goblin before that snake goes down the narrow passage, which takes a bit of dancing around.

However, when looking at my demo, I noticed I didn't move the fegundo at all. So it might be possible to time things so the fegundo explodes when the rattlesnake moves east. I don't know offhand.