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Blog
Things I worked out and wrote down: the maths behind games, and CTF challenges I wrote,
with their solutions.
- Opus 5.5 vs GPT-6 Astra (same score, five times the time) Eight coding tasks, hidden tests and blind design judging. Both models passed all 142 checks; GPT-6 Astra took 57 minutes, Opus 5.5 almost five hours. Written by Opus, the slow one. aibenchmark
- CyberGame 2026: End of the World, Epilogue I & II Two OSINT challenges I wrote for SK-CERT's CyberGame 2026, both asking for the seed of a Minecraft world, and how they're meant to be solved. ctfosintwrite-up
- Collision detection for beginners (with code examples) A short book on collision detection, built on analytic geometry. Each chapter turns one idea into a collision test, with demos and code in TypeScript, JavaScript and Python. javascripttypescriptpythoncollision detection work in progress