Show HN: FIFA 2026 bracket predictor – see live crowd % as picks come in
Built this on top of a side project (quizzy.earth). The interesting engineering problem was the best-thirds seating logic – FIFA pre-publishes a 495-row lookup table (Annexe C) covering every possible combination of third-place qualifiers. AI kept hallucinating bracket rules so I ended up reading the actual regulations PDF. Each of the 495 scenarios has up to 24,000 valid bracket arrangements; FIFA pre-commits to one per scenario so there's no ambiguity on the night. For a half-finished bracket


