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Re:Show HN: Spatial CAPTCHA – 3D spatial reasoning test agai... by Shining_S on Friday November 14, 2025 @02:29AM (#45924709)
Hi HN,

I built a 3D Spatial CAPTCHA to see if spatial reasoning is a viable way to distinguish humans from AI bots.

It is a proof of concept. I'd love to get your feedback!

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