Superpermutation Almanac

In the news

Articles, videos and podcasts about superpermutations. Did I miss one? Contact me here.

DateOutletStoryLanguageArchived copy
Sep 25, 2026WBUR, Endless ThreadThe Haruhi Problem: How anime and 4Chan solved a decades-old math puzzle podcastPublic-radio podcast episode on the 4chan Haruhi thread and the superpermutation lower bound.EnglishWayback Machine
Aug 26, 2026The AperiodicalDouble Maths First Thing: Issue 67Maths newsletter with a one-line mention of a new length-5905 superpermutation for n = 7.EnglishWayback Machine
Aug 22, 2026DekWit (YouTube)ปริศนา 20 ปีที่แก้ไม่ได้แต่ คนดูอนิเมะ ทำได้ | Haruhi Problem Explained videoThai explainer on the Haruhi problem, citing the 2018 lower-bound paper and Greg Egan's superpermutation page.ThaiWayback Machine
Aug 10, 2026化け学のふしぎ【ゆっくり解説】 (YouTube)「涼宮ハルヒの憂鬱」を視聴するために編み出した公式、25年間の未解明問題だと発覚し学会に激震が走る【ゆっくり解説】 videoJapanese synthetic-voice explainer on the superpermutation problem, the 2018 Egan and Houston work and the 4chan proof.JapaneseWayback Machine
Jul 31, 2026AlphaSignalEpoch Expands FrontierMath to 50 Unsolved Problems AI Has Already Cracked ThreeAI-news report on Epoch AI's FrontierMath: Open Problems benchmark, citing GPT-5.6-Sol beating the best known upper bounds for superpermutations on 8, 9 and 10 symbols.EnglishWayback Machine
May 16, 2026ITmedia NEWS「涼宮ハルヒの憂鬱」の視聴順を巡る4chan匿名ユーザーの投稿→うっかり数学の未解決問題で歴史的発見 2021年に論文化Japanese tech column revisits the 4chan lower bound for minimal superpermutations and its 2021 publication.JapaneseWayback Machine
Sep 1, 2025CHIP PolskaTo pytanie o anime przełamało naukowy impas. Matematycy potwierdzili jego metodę i oficjalnie opublikowali dowódPolish tech site retells the 4chan superpermutation proof and its formal publication.PolishWayback Machine
May 12, 2025ド文系でも楽しい【ゆっくり数学の雑学】 (YouTube)アニメオタクが発見した数学の公式が数学界を揺るがせました videoJapanese synthetic-voice explainer on the formula an anime fan posted, about the Haruhi superpermutation bound.JapaneseWayback Machine
Apr 1, 2025코딩애플 (YouTube)수학 난제를 증명해버린 익명의 4chan 유저 (하루히 문제) videoKorean programming channel explains superpermutations and the anonymous 4chan proof of the Haruhi problem.KoreanWayback Machine
Mar 25, 2025Jornal da FronteiraHaruhi Suzumiya e o enigma da superpermutaçãoBrazilian regional news site retells the 4chan Haruhi question and the superpermutation bound.Portuguese (Brazil)Wayback Machine
Mar 8, 2025Pepper Note (페퍼노트, newsletter on maily.so)'스즈미야 하루히의 우울'을 보려다가 풀어버린 수학 난제Korean newsletter issue explaining superpermutations through the Haruhi problem.KoreanWayback Machine
Mar 7, 2025Boing BoingAnonymous anime fan solves complex superpermutation puzzle on 4chanShort post summarising the Scientific American story on the 4chan superpermutation proof.EnglishWayback Machine
Mar 6, 2025Popular MechanicsAn Internet Commenter Asked One Innocent Question—and Accidentally Caused a Major Math ConundrumFeature on the 4chan Haruhi question, the lower bound and its write-up crediting 'Anonymous 4chan Poster'.EnglishWayback Machine
Mar 4, 2025SecurityLab.ruФормула, рождённая в хаосе: как аниме-фанат опередил профессиональных математиковRussian tech-news piece on the anonymous 4chan lower bound and its later recognition.RussianWayback Machine
Mar 3, 2025Scientific AmericanHow Anime Fans Stumbled upon a Mathematical ProofEnglish version of Bischoff's Spektrum column on the Haruhi problem, the 4chan lower bound and Egan's upper bound.EnglishWayback Machine
Feb 21, 2025Spektrum der WissenschaftSuperpermutation und Anime: 4chan-User gelingt Mathe-BeweisColumn in 'Die fabelhafte Welt der Mathematik' retelling the Haruhi problem, the 4chan lower bound and Egan's upper bound.GermanWayback Machine
Sep 17, 2024Sideprojects (YouTube)The Most Amazing Mathematical Discoveries Made by Amateurs videoDocumentary-style survey of amateur discoveries that includes the 4chan superpermutation proof.EnglishWayback Machine
Aug 6, 2024Math & Logic (YouTube)引爆数学问题的超级宅男,做出了什么超凡贡献?|最小超排列|春日问题|Haruhi Problem videoChinese explainer on minimal superpermutations and the anonymous Haruhi-problem proof.Chinese (Simplified)Wayback Machine
May 25, 2023Sergio Fernandez (YouTube)El anime que resolvió una conjetura matemática | El problema de Haruhi videoSpanish explainer on superpermutations and the 2011 4chan proof.SpanishWayback Machine
Oct 7, 2020ListverseTop 10 Remarkable Achievements Of 4chanListicle whose number 10 entry is the 4chan proof about watching Haruhi in every order.Englisharchive.today
Mar 22, 2019Wrong, But UsefulWrong, But Useful: Episode 65 podcastMaths podcast episode with a segment on superpermutations alongside Matt Parker's book Humble Pi.EnglishWayback Machine
Mar 11, 2019Stand-up Maths (YouTube)New Superpermutations Discovered! videoMatt Parker covers the new n = 7 records, including Greg Egan's 5906-length superpermutation, and has it played on a self-playing piano.EnglishWayback Machine
Feb 12, 2019Wrong, But UsefulWrong, But Useful: Episode 64 podcastMaths podcast episode with a short segment on the new n = 7 superpermutation record.EnglishWayback Machine
Jan 28, 2019Stand-up Maths (YouTube)Superpermutations: the maths problem solved by 4chan videoMatt Parker tells the story of the 4chan lower bound, Egan's upper bound and the n = 6 search, with Robin Houston.EnglishWayback Machine
Jan 16, 2019Quanta MagazineUnscrambling the Hidden Secrets of SuperpermutationsQuantized Academy column that works through superpermutations at a high-school level, following up the November 2018 feature.EnglishWayback Machine
Nov 18, 2018大老李聊数学S2E21. “凉宫春日的忧郁”有几种看法?-- 超级排列数问题 podcastChinese maths podcast episode explaining superpermutations through the Haruhi viewing-order question.Chinese (Simplified)Wayback Machine
Nov 13, 2018SciLogs, Heidelberg Laureate Forum blogPermutations and TribulationsMaths communicator Katie Steckles explains superpermutations, the 4chan lower bound and Egan's construction.EnglishWayback Machine
Nov 12, 2018NewserSolution to Math Problem Begins in Unexpected PlaceNews-digest summary of The Verge's report on the 4chan proof and Egan's bound.EnglishWayback Machine
Nov 5, 2018Quanta MagazineMystery Math Whiz and Novelist Advance Permutation ProblemLong feature on Greg Egan's new upper bound and the anonymous 4chan lower bound, with the history from Ashlock and Tillotson through Johnston and Houston.EnglishWayback Machine
Oct 30, 2018IFLScience4chan Just Solved A Decades-Old Mathematical MysteryPopular-science piece on the anonymous 4chan lower bound and its verification.EnglishWayback Machine
Oct 30, 2018VICE (Motherboard Deutschland)Anonymer 4Chan-User hat wohl zufällig ein Jahrzehnte altes Mathe-Rätsel geknacktGerman Motherboard piece on the 4chan superpermutation proof and Egan's upper bound.GermanWayback Machine
Oct 29, 2018Some Plane Truths (blog)An Uncitable Result?Mathematician Adam Sheffer asks how researchers should cite a superpermutation proof posted anonymously on 4chan.EnglishWayback Machine
Oct 27, 2018ComicBook.comInfamous Math Problem Finally Gets Solved by Fan in Anime ChatroomPop-culture news item on the Haruhi superpermutation proof.EnglishWayback Machine
Oct 27, 2018Nazology (ナゾロジー)『涼宮ハルヒの憂鬱』がきっかけで数学の難問が解決する可能性Japanese science site explains the minimal superpermutation problem and the Haruhi-inspired lower bound.JapaneseWayback Machine
Oct 26, 2018MuyComputerLa deep web resuelve un enigma de matemáticas tras 25 añosSpanish tech news item on the 4chan superpermutation lower bound.SpanishWayback Machine
Oct 26, 2018RT4chan solved part of math problem puzzling scientists for decadesShort news item on the anonymous 4chan lower bound and Egan's upper bound.EnglishWayback Machine
Oct 25, 2018Anime News NetworkHaruhi Helps Crack a 25-Year-Old Mathematical ConundrumAnime news site recounts how the 4chan question about Haruhi viewing orders led to a checked lower bound for superpermutations.EnglishWayback Machine
Oct 25, 2018futurezone.atAnonymer 4chan-Nutzer löst 25 Jahre altes Mathematik-RätselAustrian tech site reports the 4chan superpermutation proof and its verification by mathematicians.GermanWayback Machine
Oct 25, 2018GIGAZINE「涼宮ハルヒの憂鬱」のおかげで25年解けなかった数学の難問が解決されるかもしれないJapanese report explaining minimal superpermutations and how the 4chan Haruhi thread produced a lower bound.Japanesearchive.today
Oct 25, 2018MeduzaПользователь 4chan объяснял, в каком порядке смотреть аниме-сериал. И, кажется, решил задачу, над которой математики думали 25 летRussian-language explainer on the Haruhi viewing-order question and the 4chan lower bound for superpermutations.RussianWayback Machine
Oct 25, 2018ShazooАноним 4chan опубликовал решение математической проблемыShort Russian games-and-culture news item on the 4chan superpermutation proof.RussianWayback Machine
Oct 25, 2018The News Lens 關鍵評論網在4Chan討論如何播放《涼宮春日》動畫,匿名網民為組合數學難題帶來進展Taiwanese news site explains minimal superpermutations, the 4chan lower bound and Greg Egan's upper bound.Chinese (Traditional)Wayback Machine
Oct 25, 2018XatakaEn 2011, un anónimo resolvió este problema matemático, pero los expertos no usan su solución porque lo hizo en un foro de animeSpanish tech site tells the Haruhi story, the 93,884,313,611 bound and why the proof had not entered the literature.SpanishWayback Machine
Oct 25, 2018ZME ScienceTime travel Anime inspires solution to puzzling math problemScience news piece on the 4chan lower bound and its write-up by Pantone, Houston and Vatter.EnglishWayback Machine
Oct 24, 2018The VergeAn anonymous 4chan post could help solve a 25-year-old math mysteryReports that a 2011 4chan answer about watching The Melancholy of Haruhi Suzumiya in every order gave a lower bound on superpermutation length, now written up by Houston, Pantone and Vatter.EnglishWayback Machine
Jan 29, 2018Numberphile (YouTube)Superpermutations - Numberphile videoJames Grime introduces superpermutations and the search for the shortest ones; the description links Robin Houston's 2014 paper.EnglishWayback Machine