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        "description": "McCune authored the 1997 paper; Winker’s earlier conditions are separately credited. EQP proof discovery and later Otter reconstruction are distinct. WRS replays archived certificates with two custom local checkers; it has not rerun the original search or a Lean/Coq/Isabelle kernel, and has no independent reviewer or provider attestation.",
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          "citation": "McCune, Robbins Algebras Are Boolean; October 1996 announcement and historical account",
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      "statement": "# McCune and EQP: Robbins algebras are Boolean\n\nEQP found a proof in 1996 that every Robbins algebra is Boolean, completing a longstanding algebraic problem after earlier human and automated work on sufficient conditions.\n\n## Scientific scope\n\nMcCune authored the 1997 paper; Winker’s earlier conditions are separately credited. EQP proof discovery and later Otter reconstruction are distinct. WRS replays archived certificates with two custom local checkers; it has not rerun the original search or a Lean/Coq/Isabelle kernel, and has no independent reviewer or provider attestation.\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\nWilliam McCune; S. Winker\n\nMcCune: paper author; Winker: precursor conditions\n\nEQP / Argonne National Laboratory / Historical EQP; exact release not recorded: Automated proof discovery; Otter later reconstructed archived proof objects (source reported).\n\n## Original sources\n\n- [McCune, Robbins Algebras Are Boolean; October 1996 announcement and historical account](https://www.cs.unm.edu/~mccune/papers/robbins/)\n- [McCune, Solution of the Robbins Problem: JAR companion page and archived Otter certificates](https://www.cs.unm.edu/~mccune/papers/robbins/jar.html)\n",
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      "title": "McCune and EQP: Robbins algebras are Boolean"
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    "title": "McCune and EQP: Robbins algebras are Boolean",
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      {
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