{"type": "article", "title": "Chess Invariants", "publisher": "Web Pulse", "url": "https://wpnews.pro/news/chess-invariants", "original_source": "http://muratbuffalo.blogspot.com/2026/05/chess-invariants.html", "published": "2026-05-22T11:06:52+00:00", "accessed": "2026-08-18", "id": "chess-invariants"}