Daily Unfold – A paper folding puzzle game
I built a daily puzzle where a piece of paper is folded and hole-punched, and you predict where all the holes end up when it's unfolded. It's the kind of thing I used to do in grade school with actual paper and scissors, and it turns out the mental version is a surprisingly good spatial reasoning challenge. Three difficulties each day: easy is a 4×4 grid with one fold, hard is 6×6 with three folds. It's built with Next.js. The puzzles are generated deterministically on the fly using a daily seed. The engine runs a forward simulation of the paper folds using 2D coordinate mirroring, then…
What it does
In the maker’s words, at launch
I built a daily puzzle where a piece of paper is folded and hole-punched, and you predict where all the holes end up when it's unfolded. It's the kind of thing I used to do in grade school with actual paper and scissors, and it turns out the mental version is a surprisingly good spatial reasoning challenge. Three difficulties each day: easy is a 4×4 grid with one fold, hard is 6×6 with three folds. It's built with Next.js. The puzzles are generated deterministically on the fly using a daily seed. The engine runs a forward simulation of the paper folds using 2D coordinate mirroring, then calculates a "cognitive difficulty score." It weights factors that mess with human spatial reasoning, like off-center folds that break obvious symmetry and mixed-axis folding. It then automatically rerolls the daily seed until the easy, medium and hard puzzles form a good difficulty curve. Would love to hear your feedback!
Does the same job
all alternatives →
- SPSlices – puzzle game2020 · slices.ovh · ▲219
- ADA daily math puzzle inspired by Wordle2022 · mathler.com · ▲111
- MNMy New Puzzle Game2024 · shovemedia.com · ▲9
This is an idea I’ve been kicking around for a long time, and I decided to finally code it up. In the same way that Scrabble decomposes words into letters, what if there was a game that decomposed letters into sub-shapes? There’s a lot of directions this could go, and I’m still exploring the possibility space. Enjoy. Suggestions welcome. It doesn’t have a real name yet.
- FAFlexboxle – A Daily Puzzle with FlexboxJan 2026 · flexboxle.com · ▲5
I built Flexboxle, a daily puzzle game where you use Flexbox to rearrange blocks to match a target goal state. How it works: * Your goal is to arrange a set of blocks into a specific pattern using Tailwind CSS Flexbox classes (and ) * After every submission, every block is graded as perfect (green), close (yellow), or wrong (gray) * You have 6 attempts per puzzle * The game checks block positions, not your specific CSS so there can be multiple solutions that work * There is a new puzzle every day so come back tomorrow for a new challenge The trickiest part of building this game was making it…
More life & fun this month
the category →- TL
Life & fun · 10d ago · louisabraham.github.io
Photosynthesis fires two of your iPhone
Life & fun · 28d ago · photosynthesis.camera
SoloUno▲310Take control of hair pulling, nail biting & skin picking
Life & fun · 28d ago · solouno.io
Scroll through all 43,252,003,274,489,856,000 reachable Rubik's Cube permutations.
Life & fun · 26d ago · everycube.alen.is
Hi HN, I built Eigendrum, a web tool that solves the 2D wave equation for arbitrary shapes so you can hear what they sound like as drums. How it works: * Solves -∇²u = λu using finite element analysis (Kφ = λMφ) on a triangle mesh. * Validated to <0.1% error against closed-form solutions for circles (Bessel zeros) and rectangles. * Sound model factors in strike location, Rayleigh damping, and mallet width. * Includes Kac drums I & II to demonstrate identical sound spectra from different geometries. * No frameworks, build steps, or dependencies. Repo and tests:…
Life & fun · 27d ago · baselashraf81.github.io
Launched alongside, March 2026
the whole month →
Switch from ChatGPT to Claude with import memory feature
AI · Mar 2026 · claude.com
