<?xml version="1.0" encoding="utf-8"?><feed xmlns="http://www.w3.org/2005/Atom" ><generator uri="https://jekyllrb.com/" version="4.3.4">Jekyll</generator><link href="https://puzzles.1bit2bit.dev/feed.xml" rel="self" type="application/atom+xml" /><link href="https://puzzles.1bit2bit.dev/" rel="alternate" type="text/html" /><updated>2026-09-10T02:16:15+00:00</updated><id>https://puzzles.1bit2bit.dev/feed.xml</id><title type="html">Puzzles</title><subtitle>Logic puzzles and proofs</subtitle></feed>