Show HN: Family Chess: Play across firewalls and Internet cultures

Summary

Family Chess A real-time online chess game built with Django, designed specifically for users in restrictive network environments with very different Internet culture from the rest-of-world (ROW). Whether you're in a LAN-only setting or behind strict firewalls (e.g., users in China), Family Chess enables instant, seamless chess gameplay across network and cultural boundaries. Live demo: https://family-chess.quee.org (Small 2GB VPS, please be gentle!) Key Features No Internet Dependency : All assets (JS, CSS, images, sounds) are hosted locally : All assets (JS, CSS, images, sounds) are hosted locally No Login Required : Quick access with shareable 8-digit game IDs : Quick access with shareable 8-digit game IDs Cross-Network Play : Works reliably in restricted environments and within firewalls : Works reliably in restricted environments and within firewalls Mobile-Friendly : Responsive interface with click-to-move system : Responsive interface with click-to-move system Real-time Updates : Using Server-Sent Events (SSE) for instant move synchronization : Using Server-Sent Events (SSE) for instant move synchronization Multilingual: Full support for English and Chinese Both my 10 year old son living in Singapore and my father-in-law living in China loves chess. They would like to play chess, but there is no online chess platform that satisfies all of the following (ranked in terms of importance): Reliably accessible from both China and ROW Optimised for mobile-first No login required Rest-of-world Internet Users Chinese Internet Users Design Authentication Email-based accounts, usernames WeChat ID, mobile phone numbers No login required. Uses shareable game IDs (expressed as a 8 digit number) instead CDN Access Global CDNs (jsdelivr, cdnjs) work reliably Western CDNs blocked or unreliable All assets served locally. No external dependencies Network Environment Generally open internet access Completely blocked or intermittent Works behind firewalls - Optimized for restrict...