Sean Reid https://sean-reid.github.io/ 2026-09-23T00:00:00Z Sean Reid Time https://sean-reid.github.io/blog/time.html 2026-09-23T00:00:00Z Two clocks, one on Earth and one on a ship you fly around the Sun, a neutron star, or Sagittarius A*, with the drift between them computed from real geodesics Squares https://sean-reid.github.io/blog/squares.html 2026-09-23T00:00:00Z A photo redrawn as a squared rectangle, where Kirchhoff's laws pick every square size and a search over planar networks picks the arrangement Kakeya https://sean-reid.github.io/blog/kakeya.html 2026-09-23T00:00:00Z The Kakeya needle problem told in pictures that are computations: Perron trees, Pál joins, and a needle that never leaves the set it sweeps OEIS Pi Search https://sean-reid.github.io/blog/oeis-pi-search.html 2026-09-23T00:00:00Z Where the first terms of any OEIS sequence first appear in a billion digits of pi, answered from a Worker with byte-range reads and no database for the digits Rhythm https://sean-reid.github.io/blog/rhythm.html 2026-09-23T00:00:00Z Drum patterns from Markov chains stacked on Markov chains, with the whole piece carried in its URL Cyclical https://sean-reid.github.io/blog/cyclical.html 2026-09-23T00:00:00Z An exhaustive search for chord progressions that loop back to their first chord, streamed from Rust in a Web Worker Polish Notation https://sean-reid.github.io/blog/polish-notation.html 2026-09-23T00:00:00Z A converter between Łukasiewicz's parenthesis-free notation and conventional logic notation, with LaTeX output Wason https://sean-reid.github.io/blog/wason.html 2026-09-23T00:00:00Z A daily puzzle built on Wason's selection task, generated in the browser from the date alone LaTeX Preview https://sean-reid.github.io/blog/latex-preview.html 2026-09-23T00:00:00Z A LaTeX editor that compiles to PDF in the browser, with pdfTeX in WebAssembly and a self-hosted TeX Live subset URL Extension Service https://sean-reid.github.io/blog/urls.html 2026-09-23T00:00:00Z A URL lengthener that encodes the destination inside the long link, so it needs no database and nothing expires Pikiwedia https://sean-reid.github.io/blog/pikiwedia.html 2026-09-23T00:00:00Z A proxy that serves live Wikipedia with its word onsets swapped, the same way on every visit The Infinite Keynote https://sean-reid.github.io/blog/keynote.html 2026-09-23T00:00:00Z A fictional tech keynote that streams forever, where the clock is the only state viewers share JamStream https://sean-reid.github.io/blog/jamstream.html 2026-08-08T00:00:00Z A desktop app for playing music together over the internet, on a server that rents itself for the evening and then deletes itself. Randomify https://sean-reid.github.io/blog/randomify.html 2026-07-11T00:00:00Z Draws one random song from a corpus built out of MusicBrainz and links it on eight streaming services miditool https://sean-reid.github.io/blog/miditool.html 2026-07-11T00:00:00Z Sits between my keyboard and the DAW and rewrites what I play, with 52 seeded effects and a hot-reloading KDL config. Unquote https://sean-reid.github.io/blog/unquote.html 2026-07-11T00:00:00Z Exact, keyword, and semantic search over 3.7 million lines of film dialogue, all stored in one ClickHouse server. How Will I Die https://sean-reid.github.io/blog/how-will-i-die.html 2026-07-11T00:00:00Z What people of your age, sex, and country eventually die of, projected forward from WHO mortality data Movie Quotes https://sean-reid.github.io/blog/movie-quotes.html 2026-07-11T00:00:00Z A three-choice film quote quiz whose wrong answers are picked by sentence embeddings. Eigencircuits https://sean-reid.github.io/blog/eigencircuits.html 2026-07-11T00:00:00Z A fake arXiv for mathematics. A seeded grammar writes the papers and pdfTeX compiles them in the browser. Rebase https://sean-reid.github.io/blog/rebase.html 2026-07-11T00:00:00Z A daily puzzle where you assign number bases, some of them irrational, to four digit strings. Antipodal https://sean-reid.github.io/blog/antipodal.html 2026-07-11T00:00:00Z A globe that shows the weather at any point and at its antipode, over 85 years of ERA5 reanalysis. Voting https://sean-reid.github.io/blog/voting.html 2026-05-12T00:00:00Z Four voting methods checked against Arrow's criteria by enumerating every three-voter profile. Gardener's Dilemma https://sean-reid.github.io/blog/gardeners-dilemma.html 2026-05-12T00:00:00Z A two-player harvesting game with the Collatz sequence as its clock. Pulse https://sean-reid.github.io/blog/pulse.html 2026-05-09T00:00:00Z Heart rate, breathing rate, and HRV estimated from a webcam in the browser, with the pulse painted back onto the face. Clowns and Mimes https://sean-reid.github.io/blog/clowns-and-mimes.html 2026-05-05T00:00:00Z Team tag in a dark labyrinth on a torus, a Möbius strip, or a Klein bottle. The server decides every freeze. Sounds https://sean-reid.github.io/blog/sounds.html 2026-05-05T00:00:00Z A voxel world where the music is generated from the biome you're standing in. Fourier Phase https://sean-reid.github.io/blog/fourier.html 2026-04-26T00:00:00Z Two images pushed to share one Fourier amplitude spectrum, and they still look like themselves String https://sean-reid.github.io/blog/string.html 2026-04-21T00:00:00Z Turns a photo into a few thousand chords between pins on a circle, then prints the build guide. Mastery https://sean-reid.github.io/blog/mastery.html 2026-04-16T00:00:00Z 100 skills scored by hand on 19 difficulty axes, with 12 challenges you can try in the browser. Deconflict https://sean-reid.github.io/blog/deconflict.html 2026-04-10T00:00:00Z Assigns WiFi channels by coloring an interference graph built from a floorplan. Discern https://sean-reid.github.io/blog/discern.html 2026-04-07T00:00:00Z A real-or-generated photo game that rates players and images against each other with Elo. Tron https://sean-reid.github.io/blog/tron.html 2026-04-06T00:00:00Z A lightcycle game where riding close to walls makes you faster, against bots that pick moves by flood fill. Severed https://sean-reid.github.io/blog/severed.html 2026-04-05T00:00:00Z Cut submarine cables on a map of 930 metros and 1,644 links and see which cities lose bandwidth Points https://sean-reid.github.io/blog/points.html 2026-04-01T00:00:00Z Click points on a grid and get the simplest integer-coefficient curve through them. Gravity Well Arena https://sean-reid.github.io/blog/gravity.html 2026-03-29T00:00:00Z A top-down shooter where the closer you fly to a black hole, the faster the rest of the arena runs Lacuna https://sean-reid.github.io/blog/lacuna.html 2026-03-29T00:00:00Z A two-player game where you draw the board as you play and score the regions you close off. Sprouts https://sean-reid.github.io/blog/sprouts.html 2026-03-29T00:00:00Z Conway and Paterson's pen-and-paper game in the browser, against an AI that finds its moves on a morphological skeleton. Captcha Royale https://sean-reid.github.io/blog/captcha-royale.html 2026-03-29T00:00:00Z A battle royale where every round is a procedurally generated CAPTCHA and a wrong answer knocks you out Crossword Generator https://sean-reid.github.io/blog/crossword-generator.html 2026-03-29T00:00:00Z Crossword grids as a SAT problem, plus a CLI that turns them into print-ready puzzle books Antibook https://sean-reid.github.io/blog/antibook.html 2026-03-29T00:00:00Z Project Gutenberg books with every word I could invert replaced by its antonym. Bananas for Scale https://sean-reid.github.io/blog/bananas-for-scale.html 2026-03-29T00:00:00Z A static reference site that restates real measurements in bananas, golden retrievers, and other useless units. Tongue Simulator https://sean-reid.github.io/blog/tongue-simulator.html 2026-03-29T00:00:00Z Type a sentence and watch a simulated tongue, jaw, and velum move through it while the browser speaks. Crochet Pattern Generator https://sean-reid.github.io/blog/crochet-pattern-generator.html 2026-03-29T00:00:00Z Draw one side of a shape and get row-by-row amigurumi stitch counts for it. Meta Tic-Tac-Toe https://sean-reid.github.io/blog/meta-tictactoe.html 2026-03-29T00:00:00Z Ultimate tic-tac-toe against an alpha-beta search written in Rust and compiled to WebAssembly. Entropy Bus https://sean-reid.github.io/blog/entropy-bus.html 2026-03-29T00:00:00Z A racing game where the bus goes faster the less predictable your typing is What ____ Are You? https://sean-reid.github.io/blog/what-are-you.html 2026-03-29T00:00:00Z A personality quiz where the category is a parameter and the answer comes from Wikipedia. Dependencies https://sean-reid.github.io/blog/dependencies.html 2026-03-29T00:00:00Z Races two ways of finding which declared dependencies a build actually needs. FrankenPeanuts https://sean-reid.github.io/blog/frankenpeanuts.html 2026-03-29T00:00:00Z Four random Peanuts panels from 1950 to 2000, stitched into a new strip on every reload. Haiku https://sean-reid.github.io/blog/haiku.html 2026-03-29T00:00:00Z A screensaver that generates a new haiku every ten seconds from a small grammar. BrainRotter https://sean-reid.github.io/blog/brainrotter.html 2026-03-29T00:00:00Z Fills a page with grammatical brainrot from a weighted grammar and a 2,277-term lexicon. NYT Crosswords https://sean-reid.github.io/blog/nyt-crosswords.html 2026-03-29T00:00:00Z An ad-free browser player for New York Times crosswords from 1976 to 2017. Flow https://sean-reid.github.io/blog/flow.html 2026-03-29T00:00:00Z An RSVP speed reader that starts slow and ramps up, so the opening sentence lands. Perfect Hindsight https://sean-reid.github.io/blog/perfect-hindsight.html 2026-03-29T00:00:00Z What a dollar becomes if you hold the best S&P 500 stock every single trading day. Wikipedia Unscrambler https://sean-reid.github.io/blog/wikipedia-unscrambler.html 2026-03-29T00:00:00Z A word game that scrambles a passage from one of yesterday's most-read Wikipedia articles Anagram Solver https://sean-reid.github.io/blog/anagram.html 2026-03-29T00:00:00Z Every way to rearrange a phrase into real words, ranked so the good ones come first. Lasers https://sean-reid.github.io/blog/lasers.html 2026-03-29T00:00:00Z Place and rotate mirrors to bounce a laser around obstacles and into a target Papermaker https://sean-reid.github.io/blog/papermaker.html 2026-03-29T00:00:00Z SCIgen's fake computer science papers, generated in the browser and typeset to PDF. The Count of Monte Carlo https://sean-reid.github.io/blog/the-count-of-monte-carlo.html 2026-03-29T00:00:00Z Random characters settle into the text of Dumas one letter at a time. Creature Garden https://sean-reid.github.io/blog/creature-garden.html 2026-03-29T00:00:00Z A single-file ecosystem sandbox where procedural creatures eat, breed, and starve on a canvas. Random Game https://sean-reid.github.io/blog/random-game.html 2026-03-29T00:00:00Z Tells you what to guess next in a closest-number-wins game with other players. License Plate Game https://sean-reid.github.io/blog/licenseplategame.html 2026-03-29T00:00:00Z Type the three letters from a plate and get the shortest words that contain them in order.