IOL Problems and Solutions
Running since 2003. Contestants are given self-contained puzzles in languages they have almost certainly never seen, so knowing a language in advance helps nobody: everything needed is on the page. There is an individual contest and a team contest.
2025
Taiwan
1 Dzongkha not published 2 Gaahmg not published 3 Kuria not published 4 Kewa not published 5 Kaqchikel not published
2024
Brazil
1 Koryak not published 2 Hadza not published 3 Komnzo not published 4 Dâw not published 5 Yanyuwa not published Team Contest 1 problem Lexicostatistics Problem 6 Team Contest Lexicostatistics Problem
2023
Bulgaria
1 Guazacapán Xinka not published 2 Apurinã not published 3 Coastal Marind not published 4 Plains Cree not published 5 Supyire not published
2022
Isle of Man
1 Ubykh not published 2 Alabama not published 3 Nǀuuki (Nǁng) not published 4 Arabana not published 5 Proto-Chamic, Phan Rang Cham and Tsat not published
2021
Latvia
1 Ekari not published 2 Zuni not published 3 Kilivila not published 4 Agbirigba not published 5 Rikbaktsa not published
2019
South Korea
1 Yonggom not published 2 Yurok not published 3 Book Pahlavi script not published 4 West Tarangan not published 5 Nooni not published
2018
Czechia
1 Creek not published 2 Hakhun not published 3 Terêna not published 4 Mountain Arapesh (Bukiyip) not published 5 Akan not published
2017
Ireland
1 Birom not published 2 Abui not published 3 Kimbundu not published 4 Khom script/Laven not published 5 Madak not published
2016
India
1 Aralle-Tabulahan not published 2 Luwian not published 3 Kunuz Nubian not published 4 Iatmül not published 5 Jaqaru not published
2015
Bulgaria
1 Nahuatl and Arammba not published 2 Kabardian not published 3 Soundex not published 4 Wambaya not published 5 Somali Masafo not published
2014
China
1 Benabena not published 2 Kiowa not published 3 Tangut not published 4 Engenni not published 5 Gbaya not published
2013
United Kingdom
1 Yidiny not published 2 Tundra Yukaghir not published 3 Pirahã not published 4 Muna not published 5 Telepathy not published Team Contest 1 problem Georgian Problem
2012
Slovenia
1 Dyirbal not published 2 Umbu-Ungu not published 3 Basque not published 4 Teop not published 5 Rotuman not published
2011
United States
1 Menominee not published 2 Faroese not published 3 Vai not published 4 Nahuatl not published 5 EAN-13 not published
2010
Sweden
1 Budukh not published 2 Drehu Numerals not published 3 Blissymbolics not published 4 mRNA Sequencing not published 5 Romansch not published
2009
Poland
1 Sulka not published 2 Maninka and Bamana not published 3 Burmese Names not published 4 Old Indic not published 5 Nahuatl not published
2008
Bulgaria
1 Micmac not published 2 Old Norse not published 3 Drehu and Cemuhî not published 4 Copainalá Zoque not published 5 Inuktitut not published
2007
Russia
1 Braille not published 2 Movima not published 3 Georgian not published 4 Ndom not published 5 Turkish and Tatar not published
2006
Estonia
1 Lakhota not published 2 Catalan not published 3 Khmer not published 4 Udihe not published 5 Ngoni not published
2005
Netherlands
1 Tzotzil not published 2 Lango not published 3 Mansi not published 4 Yoruba not published 5 Lithuanian not published
2004
Russia
1 Kayapo not published 2 Swift News Agency not published 3 Latin not published 4 Lakhota not published 5 Chuvash not published Team Contest 1 problem Armenian Problem
2003
Bulgaria
Individual Contest 8 problems
