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        "description": "Weak solution from the initial position, not a strong solution for every legal position or every draughts variant. Source reports internal consistency and partially independent component checks; WRS has not downloaded/replayed proof databases or independently certified correctness. Search heuristics guide work but heuristic scores alone are not the terminal proof certificate.",
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      "statement": "# Checkers: computational weak solution from the initial position\n\nCombined retrograde endgame databases with proof-tree management and forward search to give a source-reported computational proof that perfect play from the standard8x8checkers starting position is a draw.\n\n## Scientific scope\n\nWeak solution from the initial position, not a strong solution for every legal position or every draughts variant. Source reports internal consistency and partially independent component checks; WRS has not downloaded/replayed proof databases or independently certified correctness. Search heuristics guide work but heuristic scores alone are not the terminal proof certificate.\n\n## Reading status\n\nThis is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.\n\n## People and systems\n\nJonathan Schaeffer; Neil Burch; Yngvi Björnsson; Akihiro Kishimoto; Martin Müller; Robert Lake; Paul Lu; Steve Sutphen\n\nSource-listed authors or explicitly credited technical contributors for the cited versions. Family entries retain source-specific attribution; a combined list is not one original-paper byline or equal individual work. Names alone do not establish resolved identities.\n\n\n\n## Original sources\n\n- [Checkers Is Solved](https://webdocs.cs.ualberta.ca/~mmueller/courses/657-Fall2025/readings/2007-checkers.pdf)\n",
      "summary": "Combined retrograde endgame databases with proof-tree management and forward search to give a source-reported computational proof that perfect play from the standard8x8checkers starting position is a draw.",
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