World Sudoku Championship

The World Sudoku Championship (WSC) is an annual international puzzle competition organised by a member of the World Puzzle Federation. The first event was held in Lucca in 2006. National teams are determined by local affiliates of the World Puzzle Federation. The competition typically consists of 100 or more puzzles solved by all competitors over multiple timed rounds, including classic sudoku, variations and other puzzle types, normally followed by a playoff for the top qualifiers to determine a champion. Examples of rounds include the Relay round, where an answer from one puzzle contributes digits to the start of the next sudoku, and the "World Record" round, in which solvers competed to set a Guinness World Record for fastest sudoku solution.

2015 World Sudoku Championship Sofia, Bulgaria

Of the 13 championships held so far, Kota Morinishi of Japan (2014, 2015, 2017 and 2018) has been the most successful winner with four individual titles, over Thomas Snyder of United States (2007, 2008 and 2011), Jan Mrozowski of Poland (2009, 2010 and 2012) who have each won three.

From 2007 there has also been a team competition. Japan is the most successful team, having won the title in 2007, 2012, 2014, 2015 and 2018; Czech Republic (2008, 2016), Germany (2010 and 2011) and China (2013, 2017) have won this title twice; Slovakia (2009) also won a title.

Starting from 2011, the event has been held alongside the World Puzzle Championship.


Currently, 30 countries are official members of the World Puzzle Federation. Individuals may also take part if their country is not already represented by a national team.[1]

Results summary

Year Host city Host nation Individual Team
Gold Silver Bronze Gold Silver Bronze
2021Shanghai China
2020Shanghai China cancelled due to the COVID-19 pandemic
2019Kirchheim Germany Ken Endo Kota Morinishi Dai Tantan China Japan Czech Republic
2018Prague Czech Republic Kota Morinishi Bastien Vial-Jaime Tiit Vunk Japan China Germany
2017Bangalore India Kota Morinishi Tiit Vunk Qiu Yanzhe China Japan France
2016Senec Slovakia Tiit VunkJakub Ondroušek Kota Morinishi Czech Republic China Japan
2015Sofia Bulgaria Kota Morinishi Tiit VunkJakub Ondroušek Japan China Czech Republic
2014London United Kingdom Kota Morinishi Tiit Vunk Bastien Vial-Jaime
Jakub Ondroušek
 Japan Germany China
2013Beijing China Jin Ce Kota Morinishi Jakub Ondroušek China Czech Republic Japan
2012Kraljevica Croatia Jan Mrozowski Kota Morinishi Hideaki Jo Japan Czech Republic China
2011Eger Hungary Thomas Snyder Kota Morinishi Tiit Vunk Germany Czech Republic United States
2010Philadelphia United States Jan Mrozowski Jakub Ondroušek Hideaki Jo Germany Czech Republic Japan
2009Žilina Slovakia Jan Mrozowski Branko Ceranic Robert Babilon Slovakia Czech Republic Serbia
2008Goa India Thomas Snyder Yuhei Kusui Jakub Ondroušek Czech Republic Japan Germany
2007Prague Czech Republic Thomas Snyder Yuhei Kusui Peter Hudak Japan United States Czech Republic
2006Lucca Italy Jana Tylova Thomas Snyder Wei-Hwa Huang---

Starting from 2013, titles have been awarded also for the best players in two age groups, Under 18 and Over 50 years of age.

Year Host city Host nation Under 18 Over 50
Gold Silver Bronze Gold Silver Bronze
2021Shanghai China
2020Shanghai China cancelled due to the COVID-19 pandemic
2019Kirchheim Germany Ming Letian Hu Yuxuan Huang Mingrui David McNeill Zoran Tanasic Joshua Zucker
2018Prague Czech Republic Ming Letian Dai Tantan Chen Shiyu Michael Smit Mark Goodliffe Taro Arimatsu
2017Bangalore India Dai Tantan Hu Yuxuan Ming Letian David McNeill Mark Goodliffe Michael Smit
2016Senec Slovakia Qiu Yanzhe Chen Shiyu Sun Cheran Zoran Tanasic Mark Goodliffe Taro Arimatsu
2015Sofia Bulgaria Sun Cheran Dai Tantan Chen Nuo David McNeill Mark Goodliffe Zoran Tanasic
2014London United Kingdom Dai Tantan Jin Ce Sun Cheran David McNeill Jiri Hrdina Stefano Forcolin
2013Beijing China Jin Ce Sun Cheran Qiu Yanzhe Henning Kalsgaard Poulsen Liang Yue Stefano Forcolin


  1. "WPF Members". World Puzzle Federation. Retrieved 16 November 2018.