2003

List of Problems from IOL 2003
Year Round No. Featuring Language Family Type Working language (official) Translated
IOL 2003 Individual Problem 1 Transcedental Algebra bg cs nl en et ru
Problem 2 Arabic Arithmetic bg cs nl en et ru
Problem 3 Basque Dates bg cs nl en et ru
Problem 4 Adyghe language bg cs nl en et ru
Problem 5 French language bg cs nl en et ru
Team Problem 1 Tocharian language bg cs nl en et ru
Problem 2 Subscripts bg cs nl en et ru
Problem 3 Verbs bg cs nl en et ru

2004

List of Problems from IOL 2004
Year Round No. Featuring Language Family Type Working language (official) Translated
IOL 2004 Individual Problem 1 Kayapo language bg nl en et pl ru se
Problem 2 Swift News Agency bg nl en et pl ru se
Problem 3 Latin language bg nl en et pl ru se
Problem 4 Lakhota language bg nl en et pl ru se
Problem 5 Chuvash language bg nl en et pl ru se
Team Problem 1 Armenian bg nl en et pl ru se

2005

List of Problems from IOL 2005
Year Round No. Featuring Language Family Type Working language (official) Translated
IOL 2005 Individual Problem 1 Tzotzil language bg nl en et fi pl ro ru sr
Problem 2 Lango language bg nl en et fi pl ro ru sr
Problem 3 Mansi language Indo-European bg nl en et fi pl ro ru sr
Problem 4 Yoruba language bg nl en et fi pl ro ru sr
Problem 5 Lithuanian language bg nl en et fi pl ro ru sr
Team Problem 1 Figuig bg nl en et fi pl ro ru sr

2006

List of Problems from IOL 2006
Year Round No. Featuring Language Family Type Working language (official) Translated
IOL 2006 Individual Problem 1 Lakhota language bg nl en et fi lt pl ru sr
Problem 2 Catalan language bg nl en et fi lt pl ru sr
Problem 3 Khmer language bg nl en et fi lt pl ru sr
Problem 4 Udihe language bg nl en et fi lt pl ru sr
Problem 5 Ngoni language bg nl en et fi lt pl ru sr
Team Problem 1 American Sign Language bg nl en et fi lt pl ru sr

2007

List of Problems from IOL 2007
Year Round No. Featuring Language Family Type Working language (official) Translated
IOL 2007 Individual Problem 1 Braille bg nl en et pl ru es sv
Problem 2 Movima language bg nl en et pl ru es sv
Problem 3 Georgian language bg nl en et pl ru es sv
Problem 4 Ndom language bg nl en et pl ru es sv
Problem 5 Turkish and Tatar languages bg nl en et pl ru es sv
Team Problem 1 Hawaiian bg nl en et pl ru es sv


2008

List of Problems from IOL 2008
Year Round No. Featuring Language Family Type Working language (official) Translated
IOL 2008 Individual Problem 1 Micmac language bg nl en et pl ru sl sv
Problem 2 Old Norse language bg nl en et pl ru sl sv
Problem 3 Drehu and Cemuhî languages bg nl en et pl ru sl sv
Problem 4 Copainalá Zoque language bg nl en et pl ru sl sv
Problem 5 Inuktitut language bg nl en et pl ru sl sv
Team Problem 1 Fanqie language bg nl en et pl ru sl sv

2009

List of Problems from IOL 2009
Year Round No. Featuring Language Family Type Working language (official) Translated
IOL 2009 Individual Problem 1 Sulka language [[Prob
Problem 2 Maninka and Bamana languages [[Pro
Problem 3 Burmese Names [[Pr
Problem 4 Old Indic language [[Pr
Problem 5 Nahuatl language [[Prob
Team Problem 1 Vietnamese [[Pro


2010

List of Problems from IOL 2010
Year Round No. Featuring Language Family Type Working language (official) Translated
IOL 2010 Individual Problem 1 Budukh language [[Pr
Problem 2 Drehu Numerals [[Pro
Problem 3 Blissymbolics N/A [[Pro
Problem 4 mRNA Sequencing N/A [[Pro
Problem 5 Romansh language [[Pro
Team Problem 1 Mongolian [[Pro

2011

List of Problems from IOL 2011
Year Round No. Featuring Language Family Type Working language (official) Translated
IOL 2011 Individual Problem 1 Menominee language [[Pr
Problem 2 Faroese language [[Pro
Problem 3 Vai language [[Pro
Problem 4 Nahuatl language [[Pro
Problem 5 EAN-13 [[Pro
Team Problem 1 Sanskrit Poetry [[Pro

2012

List of Problems from IOL 2012
Year Round No. Featuring Language Family Type Working language (official) Translated
IOL 2012 Individual Problem 1 Dyirbal language [[Pro
Problem 2 Umbu-Ungu language [[Prob
Problem 3 Basque language [[Prob
Problem 4 Teop language [[P
Problem 5 Rotuman language [[Prob
Team Problem 1 Lao language [[Prob

2013

List of Problems from IOL 2013
Year Round No. Featuring Language Family Type Working language (official) Translated
IOL 2013 Individual Problem 1 Yidiny language [[P
Problem 2 Tundra Yukaghir language [[Prob
Problem 3 Pirahã language [[Pr
Problem 4 Muna language [[Pro
Problem 5 Telepathy [[Pr
Team Problem 1 Georgian [[Pro

2014

List of Problems from IOL 2014
Year Round No. Featuring Language Family Type Working language (official) Translated
IOL 2014 Individual Problem 1 Benabena language [[Prob
Problem 2 Kiowa language [[Pr
Problem 3 Tangut language [[Pro
Problem 4 Engenni language [[Pr
Problem 5 Gbaya language [[Prob
Team Problem 1 Armenian language [[Pro

2015

List of Problems from IOL 2015
Year Round No. Featuring Language Family Type Working language (official) Translated
IOL 2015 Individual Problem 1 Nahuatl and Arammba languages [[Pr
Problem 2 Kabardian language [[Prob
Problem 3 Soundex N/A [[Pro
Problem 4 Wambaya language [[Probl
Problem 5 Somali Masafo language [[Pr
Team Problem 1 Northern Sotho [[Pro

2016

List of Problems from IOL 2016
Year Round No. Featuring Language Family Type Working language (official) Translated
IOL 2016 Individual Problem 1 Aralle-Tabulahan language [[Prob
Problem 2 Luwian language [[Prob
Problem 3 Kunuz Nubian language [[Pro
Problem 4 Iatmūl language [[Pro
Problem 5 Jaqaru language [[Prob
Team Problem 1 Taa language [[Prob

2017

List of Problems from IOL 2017
Year Round No. Featuring Language Family Type Working language (official) Translated
IOL 2017 Individual Problem 1 Birom language [[Prob
Problem 2 Abui language [[Probl
Problem 3 Kimbundu language [[Pr
Problem 4 Khom script / Laven [[Pr
Problem 5 Madak language [[Pro
Team Problem 1 Emoji / Indonesian [[Pro

2018

List of Problems from IOL 2018
Year Round No. Featuring Language Family Type Working language (official) Translated
IOL 2018 Individual Problem 1 Creek language [[Prob
Problem 2 Hakhun language [[Pr
Problem 3 Terêna language [[Pro
Problem 4 Mountain Arapesh (Bukiyip) language [[Pr
Problem 5 Akan language [[Pro
Team Problem 1 Mẽbêngôkre, Xavante and Krĩkatí [[Pr


2019

List of Problems from IOL 2019
Year Round No. Featuring Language Family Type Working language (official) Translated
IOL 2019 Individual Problem 1 Yonggom language Trans-New Guinea Rosetta Stone, sentence bn bg zh zt cs da nl en(A) en(B) et fi fr de hu ja ko lv pl pt(B) ro ru sl es sv tr uk
Problem 2 Yurok language Algic bn bg zh zt cs da nl en(A) en(B) et fi fr de hu ja ko lv pl pt(B) ro ru sl es sv tr uk
Problem 3 Book Pahlavi script Indo-European bn bg zh zt cs da nl en(A) en(B) et fi fr de hu ja ko lv pl pt(B) ro ru sl es sv tr uk
Problem 4 West Tarangan language Austronesian bn bg zh zt cs da nl en(A) en(B) et fi fr de hu ja ko lv pl pt(B) ro ru sl es sv tr uk
Problem 5 Nooni language Atlantic-Congo bn bg zh zt cs da nl en(A) en(B) et fi fr de hu ja ko lv pl pt(B) ro ru sl es sv tr uk
Team Problem 1 Rhythmic Gymnastics N/A bn bg zh zt cs da nl en(A) en(B) et fi fr de hu ja ko lv pl pt(B) ro ru sl es sv tr uk