NACLO - North American Computational Linguistics Olympiad

new View the new NACLO problem database

A few practice problems to start with: Click Here

NACLO 2014 Problems

Name Solution Author
What's the Time in Tallinn? Solution Babette Newsome
Māori Loanwords Solution Patrick Littell
Levenshtein's Fine Signs Solution Blake Allen and Patrick Littell
Wheel of Fortune Cookies Solution Patrick Littell
Visible Speech Solution Natalie Weber and Patrick Littell
Lontara Solution Chelsea Voss
Cameroon Pidgin English Solution Aleka Blackwell
Bertrand and Russell Solution Ben King
To play or not to play Solution Catherine Sheard
Lexicondensed Solution Tom McCoy
Don't be Ukhrul to a Liver that's True Solution David Mortensen
Transducing Runes Solution Jordan Boyd-Graber
Come to Istanbul Solution David Palfreyman
Hungarian Rocks Solution Adam Hesterberg
CCG Solution Jonathan Kummerfeld, Aleka Blackwell, and Patrick Littell
Combining Categories in Tok Pisin Solution Jonathan Kummerfeld, Aleka Blackwell, and Patrick Littell
Learning Yidiny Solution Mary Laughren
All Round 1 Problems All Round 1 Solutions
All Round 2 Problems All Round 2 Solutions

NACLO 2013 Problems

Name Solution Author
Intuitive Inuit Solution Harold Somers
A Case of Pali Solution Babette Verhoeven
The Heads and Tails of Huffman Solution John DeNero
Kwak'wala Word Search Solution Patrick Littell
Shaw Business Solution Babette Verhoeven
Grammar Rules! Solution Andrea Schalley and Patrick Littell
Phoenician Fun Solution Harold Somers
Twodee Solution Jason Eisner
Beja Solution Richard Hudson
Stockholms Tunnelbana Solution Patrick Littell
Putting the Books in Order Solution Dragomir Radev
Yesbot Solution Patrick Littell
Playing the Cognate Game Solution Catherine Sheard
A Tree by Any Other Name Solution John DeNero
Warlpiri Kinship Groups Solution Alan Chang
Deer Father Solution Patrick Littell
Grice's Grifter Gadgets Solution Jordan Boyd-Graber
Poles Apart Solution Dragomir Radev
All Round 1 Problems All Round 1 Solutions
All Round 2 Problems All Round 2 Solutions

NACLO 2012 Problems

Name Solution Author
Cat and Mouse Story Solution Patrick Littell
Learn Yolmo with pleasure Solution Lauren Gawne
Interstellar First Contact Solution Simon Zwarts, based on work by Kevin Knight
All in the Family Solution Dragomir Radev
Traevölörs Freisbuk Solution Patrick Littell
Crocodile Bardi Solution Catherine Sheard
Haitian Creole Solution Ivaylo Youmerski
Waorani Numbers Solution Dragomir Radev
The silence of the goats Solution Alexey Pegushev
Ik heb voorspeld Solution Dick Hudson
A fox among the h Solution Pat Littell
Who is good? Solution Dick Hudson
The Deschamps Codice Solution Alexander Piperski
Waanyi Solution Mary Laughren
The Little Engine that Could...Read Solution Pat Littell and James Pustejovsky
Jeg kan tælle Solution Harold Somers
100 Surnames Solution Pat Littell
One, Two, Tree Solution Noah Smith, Kevin Gimbel, and Jason Eisner
All Round 1 Problems All Round 1 Solutions
All Round 2 Problems All Round 2 Solutions

NACLO 2011 Problems

Name Solution Author
Running on MT Solution Harold Somers
Mix Up on the Farm Solution Lori Levin
The War of the Dots Solution Patrick Littell
Double or Quit in Caterpillar Country Solution Mark Dras
BrokEnglish! Solution Patrick Littell
Tiger Tale Solution Dragomir Radev
Ulwa Possessives Solution Richard Sproat
Counting in Irish Solution Tom Payne
A Large Spoon is Enough Solution Harold Somers
Axolotl in the Water Solution John Berman
A Script for the Ndyuka Solution Patrick Littell
Swallow the Salt Solution Bozhidar Bozhanov
Word Salad Solution Eric Breck
Stopping and Flapping in Warlpiri Solution Mary Laughren
All Round 1 Problems All Round 1 Solutions
All Round 2 Problems All Round 2 Solutions

NACLO 2010 Problems

Name Solution Author
Gelda's House of Gelbelgarg Solution Patrick Littell
Say It in Abma Solution Cindy Schneider
Lost in Yerevan Solution Dragomir R. Radev
Huevos y Pimientos Solution Dragomir R. Radev
Texting, Texting, One Two Three Solution Patrick Littell
Türkış Delıt Solution Bozhidar Bozhanov
Tangkhul Tangle Solution David Mortensen
Ardhay Uzzlepay Solution John Henderson with the assistance of Sophie Crouch, University of Western Australia. Based on Crouch (2008, 2009) and data from the MPI EVA Minangkabau corpus
Dogs and cats on trees Solution Emily Bender
Plains Cree Solution Patrick Littell and Julia Workman
F u cn rd ths Solution Richard Sproat
Real Money Solution Patrick Littell
No smoke without fire Solution Aleka Blackwell
Tale of Kieu Solution David Mortensen and Patrick Littell
Possessed in Vanuatu Solution Jane Simpson, University of Sydney and Jeremy Hammond, Max Planck Institute for Psycholinguistics
Khipu Solution Patrick Littell and Erin Donnelly
All Round 1 Problems All Solutions
All Round 2 Problems

NACLO 2009 Problems

Name Solution Author
Tenji karaoke Solution Patrick Littell
Nok-nok! Solution Eugene Fink
Letters for Cuzco Solution Patrick Littell
You will be laughing Solution Bozhidar Bozhanov
Summer Eyes Solution Dragomir Radev and Adam Hesterberg
Help my camera! Solution Emily Bender
Sk8 Parsr Solution Patrick Littell
Linear Combinations Solution Richard Sproat
Easy Pieces Solution Todor Tchervenkov
Hypo-Hmong-driac Solution David Mortensen
The gerbil arrived Solution Bozhidar Bozhanov
Yak, Du, Dray Solution Dragomir Radev
Orwellspeak Solution Jason Eisner
All Round 1 Problems All Solutions
All Round 2 Problems

NACLO 2008 Problems

Name Solution Author
Of monkeys and children Solution Ronnie Sim and Thomas Payne
Springing up baby Solution Ankit Srivastava and Emily Bender
Reach for the top Solution Patrick Littell
Spare the Rod Solution Dragomir Radev
A Fish Story Solution Patrick Littell
Fakepapershelfmaker Solution Willie Costello
Manam, I'm Anam Solution Patrick Littell
Thorny Stems Solution Eric Breck
aw-TOM-uh-tuh Solution Patrick Littell
The Curragh of Kildare Solution Todor Tchervenkov
Tzolk'in Solution Patrick Littell and Erin Donnelly
The Whole Spectrum Solution Adam Hesterberg
All Round 1 Problems All Round 1 Solutions
All Round 2 Problems All Round 2 Solutions

NACLO 2007 Problems

Name Solution Author
We are all molistic in a way Solution Dragomir Radev
Pooh's encyclopedia Solution Eugene Fink
A donkey in every house Solution Todor Tchervenkov
Hmong Solution Ivan Derzhanski
Better sorry than shunk Solution Jason Eisner and Roy Tromble
The lost tram Solution Boris Iomdin
Rewrite me badd Solution Patrick Littell and David Mortensen
This problem is pretty // easy Solution Dragomir Radev
All Problems All Solutions

Student Contributed Problems

Name Solution Author
Hebrew - Morris Alper
Japanese - Morris Alper
Tamil Solution Anand Natarajan
Welsh Solution Anand Natarajan
Yers Solutions Anand Natarajan

More Problems
Narod Practice Problems 1
Narod Practice Problems 2

Want even more practice problems?
          Visit the Princeton archive
          Or the International Linguistics Olympiad

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