The Hardest Logic Puzzle Ever

logic puzzle by George Boolos and Raymond Smullyan
SportsTeam riddle Q33041
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The Hardest Logic Puzzle Ever

Summary

The Hardest Logic Puzzle Ever is a riddle[1]. It draws 315 Wikipedia views per month (riddle category, ranking #1 of 5).[2]

Key Facts

  • The Hardest Logic Puzzle Ever authored Raymond Smullyan[3].
  • The Hardest Logic Puzzle Ever authored George Boolos[4].
  • The Hardest Logic Puzzle Ever's instance of is recorded as riddle[5].
  • The Hardest Logic Puzzle Ever's instance of is recorded as logic puzzle[6].
  • The Hardest Logic Puzzle Ever's publication date is recorded as +1996-00-00T00:00:00Z[7].
  • The Hardest Logic Puzzle Ever's Freebase ID is recorded as /m/027vwh7[8].
  • The Hardest Logic Puzzle Ever's described at URL is recorded as http://www.hcs.harvard.edu/~hrp/issues/1996/Boolos.pdf[9].
  • The Hardest Logic Puzzle Ever's Namuwiki ID is recorded as 가장 어려운 논리 퍼즐[10].

Body

Works and Contributions

Authored works include Raymond Smullyan[3], a mathematician[11], 1919–2017[12], of United States[13], specialised in logic[14] and George Boolos[4], a mathematician[15], 1940–1996[16], of United States[17], awarded the Guggenheim Fellowship[18], specialised in mathematical logic[19].

Why It Matters

The Hardest Logic Puzzle Ever draws 315 Wikipedia views per month (riddle category, ranking #1 of 5).[2] It has Wikipedia articles in 15 language editions, a strong signal of global cultural recognition.[20]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [5] . wikidata.org.
  2. [6] . wikidata.org.
  3. [3] . wikidata.org.
  4. [4] . wikidata.org.
  5. [7] . hcs.harvard.edu. hcs.harvard.edu. Provenance: wikidata.org.
  6. [8] . Freebase Data Dumps. wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . wikidata.org.

Inline context (facts about related entities)

  1. [11] . Wikidata. wikidata.org. → on this site
  2. [12] . Wikidata. wikidata.org. → on this site
  3. [13] . Wikidata. wikidata.org. → on this site
  4. [14] . Wikidata. wikidata.org. → on this site
  5. [15] . Wikidata. wikidata.org. → on this site
  6. [16] . Wikidata. wikidata.org. → on this site
  7. [17] . Wikidata. wikidata.org. → on this site
  8. [18] . Wikidata. wikidata.org. → on this site
  9. [19] . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [20] . Wikidata sitelinks. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). The Hardest Logic Puzzle Ever. Retrieved May 3, 2026, from https://4ort.xyz/entity/the-hardest-logic-puzzle-ever
MLA “The Hardest Logic Puzzle Ever.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/the-hardest-logic-puzzle-ever.
BibTeX @misc{4ortxyz_the-hardest-logic-puzzle-ever_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{The Hardest Logic Puzzle Ever}}, year = {2026}, url = {https://4ort.xyz/entity/the-hardest-logic-puzzle-ever}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): The Hardest Logic Puzzle Ever — https://4ort.xyz/entity/the-hardest-logic-puzzle-ever (retrieved 2026-05-03)

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