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Kvantik Puzzle Solution Revealed: Snake-Proof Design “Adder”

4/28/2026

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Summary

Story summary

The author of a 2014 Kvantik Magazine geometry puzzle said solutions will be released today.
The puzzle asks readers to design snake-proof passages that let a short snake pass but block a longer one.
The design uses a looping tube that blocks a long snake and an opening that prevents a short snake from crossing.
The answer “adder” accompanies an invitation from the author for readers to email new ideas.

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Story summary

The author of a 2014 Kvantik Magazine geometry puzzle said solutions will be released today.
The puzzle asks readers to design snake-proof passages that let a short snake pass but block a longer one.
The design uses a looping tube that blocks a long snake and an opening that prevents a short snake from crossing.
The answer “adder” accompanies an invitation from the author for readers to email new ideas.