Griductive - Daily Logic Puzzles
A new deductive logic puzzle every day
What it does
Griductive is a daily deductive logic puzzle where you classify suspects and innocents using nothing but reasoning — no guessing, no luck. Every day brings a fresh puzzle across multiple grid sizes (3×3, 4×4, 5×5), with carefully crafted clues that reward pure deductive thinking. ✦ Fresh puzzle every day ✦ Multiple grid sizes for different difficulty levels ✦ Streaks, stats & leaderboards ✦ No download — plays instantly in browser ✦ Completely free to play
Does the same job
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Hey HN, About twenty years ago, while I was in college, I first stumbled upon James Propp's Self-Referential Aptitude Test [1] and absolutely loved it. Ever since then, I've had this idea of turning that concept into a daily game, and I've finally built it: https://www.logiquiz.com/ The game interface checks each question against the answers you've given, so it doesn't spoil anything by giving away the answers. There are five different tests each day, from very easy to very hard. I'd love to hear what you think! [1]: https://faculty.uml.edu/jpropp/srat-Q.txt
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