Writing
Long pieces, in no hurry, written to understand rather than to conclude.
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I built a tool that reads six-hour GeoGuessr VODs and fills a CSV of games, rounds, scores and countries in about 40 minutes on a gaming PC. A local vision model does the reading, but a frame classifier, targeted crops and the game's own rules do most of the work.
Twelve days and 1,400 km by car from Vilnius to Tallinn: three Baltic capitals that each look towards a different neighbour, flat but wild country, bogs and dunes, and some memorable overtaking.
I pointed Claude Opus 5.5 at 27 CodinGame code golf puzzles in TypeScript. It cut the total from 24,644 bytes to 6,788, beat Fable 5 by 47% on the shared puzzles, and took the TypeScript record on Mars Lander with a 60-byte program that never reads the lander's state.
Let Them Bee is an incremental game I built for the DTJ36 jam in 27 hours: 29 commits, 10,743 lines of TypeScript, two runtime dependencies, and Claude Opus 5 on low reasoning effort as my only assistant. Where the time went, and why installing ESLint halfway through the jam was a good idea.
I dropped the PunditBench LLM predictions into my friends' World Cup pool, scored two ways. On raw scores DeepSeek V4 Flash edged everyone; under a betting-odds system only Grok 4.3 cracked the top five. The lesson isn't who won: the same market finishes 55th played naively and 20th played well, so turning a prediction into a good ticket matters more than the prediction.
Photos from a June week around La Rochelle: Fort Boyard from the sea, the islands of Ré and Oléron, Rochefort and its transporter bridge, and older stone inland at Saintes.
I re-ran the 21 CodinGame code golf puzzles from the Opus post with Claude Fable 5. It wrote 24.7% fewer bytes overall, 10,712 down to 8,065: still above the best human TypeScript, but closing the gap fast.
My static Astro blog took 12 minutes to build and deploy. The culprits: satori-html parsing 320 KB data URIs quadratically, AVIF encodings thrown away with every CI runner, and an upload that re-sent unchanged files. Three fixes, a few lines each.
I pointed Opus 4.8 at six CodinGame optimization puzzles. On the travelling salesman it tied the top of the leaderboard; on the open-ended games it reached a sixth or an eighth of the best score and stopped. The thing it's bad at is the CodinGame squeeze, not the solving.
