Observed arrival · 2026-10-13
Devin O’Keefe makes old ciphers and games browser experiments
A personal index of research write-ups on historical cryptography, game-playing AI, and mathematics, with browser-based demonstrations and playable projects.
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
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- For
- Readers of historical cryptography and game-solving research
- Worth noticing
- The Riga write-up says its cipher key was found from ciphertext alone and provides a full reading.
Field notes
The index groups nine pieces across cryptography, game-playing AI, and mathematics, marking each as an explainer or playable project and as finished. Several entries describe small checks or games available in the browser. The Senet project reports a 0.8 MB network trained to match a 34 GB table, while the Hnefatafl write-up reports its results against TaflZero, including two unfinished games.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
◉HumanPersonal, local, civic, or handmade
One card from the complete issue