Although the save point is the only apparent snake trap I have successfully used another method to kill the snake on several occasions.
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×First kill the lower of the two roach queens.
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×Lure the snake into the top section with the other queen. Once there it seems to like staying, almost as if programmed to do so.
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×This gives you plenty of time to get down to the Orb and close the gate on it. Then give it only as many 5’s as needed.
When I first came across snakes I wondered if closing the gates on them would chop them in two and kill them if you were able to catch the head but no go.