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International Linguistics Olympiad (home)
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Official website · International Linguistics Olympiad (IOL), ioling.org · 2026 · checked 2 Nov 2026
Opened https://ioling.org/ on 2026-11-02. The page is headed 'International Linguistics Olympiad' and its footer reads '(c) 2003- International Linguistics Olympiad except where cited'. Its menu links Contests (Upcoming, Past Contests, How to Participate), Countries, Results, Problems (Samples, By year, Slides, Solvers' Choice, Average Scores), About (FAQ, History, Trophies, Regulations, Sponsorship), News, Sponsors and Contact, and names the IOL Board, Problem Committee, Ethics Committee and Local Organizers. Those pages were opened as listed in the other documents. The home page itself states no syllabus.
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Regulations of the International Linguistics Olympiad (web page)
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Information bulletin / notification · International Linguistics Olympiad (IOL), ioling.org · 2026 · checked 2 Nov 2026
Opened https://ioling.org/regulations/ on 2026-11-02. It carries the preamble of the Regulations and links to the PDF (https://ioling.org/rules/rules.pdf) and to the online version (https://ioling.org/regulations/online/), both opened. The preamble describes the IOL as an international science olympiad for secondary school students built on the self-sufficient linguistic problem.
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Regulations of the International Linguistics Olympiad (IOL), 2009, 12th revision 2026 (PDF)
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Information bulletin / notification · International Linguistics Olympiad (IOL), ioling.org · 2026 · checked 2 Nov 2026
Downloaded https://ioling.org/rules/rules.pdf on 2026-11-02 (HTTP 200, application/pdf, 16 pages; cover reads 'Regulations of the International Linguistics Olympiad (IOL)', '2009, 12th revision 2026') and read the extracted text of sections 1 to 3.1 in full (the contents list sections 1 to 4.5). Compared for this file: 1.1 (What is the IOL: annual competition for pre-university students, no special knowledge, branches of linguistics named), 1.2 (aims), 2.1 (held annually), 2.2 (accreditation, not-for-gain rule), 2.3 and 2.3.1 (team of up to four, eligibility, under 20, pre-university), 2.3.2 (one team per accredited country), 2.5 (individual contest of five problems and six hours, team contest of three or four hours, no calculators or devices), 2.6 (languages), 2.7 (medals 1:2:3, Honourable Mentions, team medals, certificate of participation) and 3.1 (International Board is the governing body). Sections 3.2 to 4.5 were not read word for word. Dates, charges and deadlines in the text were read but are not copied.
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Problems by year - International Linguistics Olympiad
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Sample / previous-year papers · International Linguistics Olympiad (IOL), ioling.org · 2026 · checked 2 Nov 2026
Link to official page, contents partly read. Opened https://ioling.org/problems/by_year/ on 2026-11-02. It lists every contest from 2003 to 2026 (no contest in 2020) with the titles of the individual problems i1 to i5 and the team problem t1, and links problem and solution booklets in many languages at addresses of the form https://ioling.org/booklets/iol-YYYY-indiv-prob.en.pdf. The problem sets were not read or compared for this file; the page was not used as a source for any chapter. The booklet links for ten editions were checked separately (see the papers file).
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Sample problems - International Linguistics Olympiad
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Sample paper · International Linguistics Olympiad (IOL), ioling.org · 2026 · checked 2 Nov 2026
Opened https://ioling.org/problems/samples/ on 2026-11-02 and read it. It states that 'All of the information you need to solve the puzzles below is in the puzzles themselves', that only analytical reasoning is needed, and lists the sample problems by difficulty (Easy, Intermediate, Hard) with PDF links to the English sample booklet and its solutions. It names no topics or syllabus.
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Sample problems booklet (English, revised 2026) (PDF)
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Sample paper · International Linguistics Olympiad (IOL), ioling.org · 2026 · checked 2 Nov 2026
Link to official PDF, contents partly read. Opened https://ioling.org/booklets/samples-revision2026.en.pdf on 2026-11-02 (HTTP 200, application/pdf, 20 pages). Only the first page was read: it is headed 'International Linguistics Olympiad', 'Sample problems', 'Last revised: June 28th, 2026'. The puzzles themselves were not compared with anything in this file.
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FAQ - International Linguistics Olympiad
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Other official page · International Linguistics Olympiad (IOL), ioling.org · 2026 · checked 2 Nov 2026
Opened https://ioling.org/faq/ on 2026-11-02 and read the answers on who may take part (qualify through a national contest; under 20; secondary school or lower), on whether linguistics knowledge is needed ('No, not technically - but it's very useful.'), on the individual contest (normally six hours, no outside resources) and the team contest (teams of contestants, one solution) and on how to take part (through the national contest's organisers). The page has no syllabus; it says problems are based on genuine languages. Compared with Regulations 1.1, 2.3.1 and 2.5: consistent.
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How to Participate - International Linguistics Olympiad
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Other official page · International Linguistics Olympiad (IOL), ioling.org · 2026 · checked 2 Nov 2026
Opened https://ioling.org/participation/ on 2026-11-02 and read it in full. It says contestants are usually chosen from the winners of their national Linguistics Olympiad, that no prior knowledge is needed because every problem is self-contained, that preparation is by working through past problems starting with the samples, that current university students are ineligible, and that organisations wishing to start a national contest must be not-for-profit. It gives a number of teams per country that differs from Regulations 2.3.2 (one team, a second at the host's discretion); this file follows the Regulations for team facts.
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History - International Linguistics Olympiad
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Other official page · International Linguistics Olympiad (IOL), ioling.org · 2026 · checked 2 Nov 2026
Opened https://ioling.org/history/ on 2026-11-02 and read it. It traces the idea to the first linguistics olympiad for secondary school students, held in Moscow in 1965, and to exchanges between Russian and Bulgarian contests, and gives Borovets, Bulgaria as the first IOL in 2003. It does not name a single organising body. Used only to confirm the background; no fact in this file depends on it beyond that.