• AIBRC-001 • History of technology • 6 min read

  Two dates, one cable: writing a benchmark the search snippet can answer

  How the 1858 transatlantic telegraph produced a question with a single defensible answer — and why the obvious date is the wrong one.

  Last verified 4 September 2026

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• AIBRC-002 • Space mission records • 5 min read

  Counter-intuitive by design: the Voyager launch-order benchmark

  A verifiable spaceflight question where the naming convention actively misleads, built entirely on NASA primary pages.

  Last verified 4 September 2026

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• AIBRC-003 • Legal case records • 5 min read

  Reading the law report, not the retelling

  Building a legal-records challenge around the 1932 'snail in the bottle' appeal, where secondary accounts and the report disagree on dates.

  Last verified 4 September 2026

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• AIBRC-004 • US court records • 4 min read

  The famous date is the decoy

  A benchmark on the school-segregation appeal that asks for the first oral argument date, not the decision everyone remembers.

  Last verified 4 September 2026

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• AIBRC-005 • Politics and treaties • 4 min read

  Signed is not in force: dating a treaty properly

  A politics benchmark separating the famous 1945 signing from the date the instrument actually took effect, using the depositary's own record.

  Last verified 4 September 2026

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• AIBRC-006 • Technology history • 4 min read

  A month too early and a day too late

  A computing-history benchmark with two documented traps: the hardware installation month, and the UTC conversion of a late-night log entry.

  Last verified 4 September 2026

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• AIBRC-007 • Culture and museums • 4 min read

  When the museum's own record is not enough

  A culture benchmark where the holding institution confirms the thief and the year, but the day has to come from a second checkable record.

  Last verified 4 September 2026

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• AIBRC-008 • Science and publishing • 4 min read

  Discovered, published, awarded: three dates, one answer

  A science benchmark that asks for a journal issue date, so the famous discovery story and the Nobel year both become traps.

  Last verified 4 September 2026

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• AIBRC-009 • Economics and central banking • 5 min read

  Founded in 1913, open in 1914: dating an institution properly

  An economics benchmark that separates the day a central-banking statute was signed from the day the twelve regional banks actually opened for business.

  Last verified 4 September 2026

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