Architectle
Six guesses to name the architect. The photograph opens as a tight crop and widens with every miss, and each guess is scored against the answer on era, movement, region and typology. A new building every day.
Side projects
Things I build outside research. All free, all running entirely in your browser.
GeoFauna
Paint a species’ range on a zoomable Robinson map — brush, eraser, land snap — and get scored against occurrence-derived GBIF open data, with IUCN conservation context at every reveal and the range-building method documented species by species. A daily expedition and an unlimited catalogue.
Partido a Partido
Deduce the starting eleven — and the manager — of historic Atlético de Madrid matches. A daily challenge and an unlimited mode. An independent game, not an official club product.
Cityle
Six guesses, one city on Earth. An urban-climate deduction game over 255 hand-curated cities: every miss unlocks another layer of clues — Köppen climate, air quality, urban form, public services, 2050 projections — until the city gives itself away.
Eclipse-Lapse
Solar astrophotography and astrophysics for the 12 August 2026 sunset eclipse over the Sierra de Gredos. A consumer camera behind a homemade solar filter, then the full treatment: a computational RAW pipeline, location-dependent ephemeris math, 2D lunar transit vector recovery, and an interactive frame-inspection studio — with the derivations written up.
P-hackle
A daily game about the garden of forking paths. You get one dataset and 1,792 defensible ways to analyse it: choose an outcome, a subgroup, covariates, exclusions, a transform and a tail, and keep going until something crosses p < 0.05. Then the reveal shows you every path you did not take, and asks whether the finding was real. Reporting the null is a way to win.
Climatle
Guess the country from its climate statistics — emissions, energy mix, temperature anomaly — with the distance and direction to the answer after every guess.