World Sudoku Championship
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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.
Of the 13 championships held so far, Kota Morinishi of Japan (2014, 2015, 2017 and 2018) has been the most successful winners with four individual titles each, succeeded to Thomas Snyder of United States (2007, 2008 and 2011), Jan Mrozowski of Poland (2009, 2010 and 2012) who have 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. In the latest WSC in 2018 Prague Czech Republic the number of participants exceeded the magic limit (248 contestants from 34 countries).
|Year||Host city||Host nation||Individual||Team|
|2018||Prague||Czech Republic||Kota Morinishi||Bastien Vial-Jaime||Tiit Vunk||Japan||China||Germany|
|2017||Bangalore||India||Kota Morinishi||Tiit Vunk||Qiu Yanzhe||China||Japan||France|
|2016||Senec||Slovakia||Tiit Vunk||Jakub Ondroušek||Kota Morinishi||Czech Republic||China||Japan|
|2015||Sofia||Bulgaria||Kota Morinishi||Tiit Vunk||Jakub Ondroušek||Japan||China||Czech Republic|
|2014||London||United Kingdom||Kota Morinishi||Tiit Vunk|| Bastien Vial-Jaime
|2013||Beijing||China||Jin Ce||Kota Morinishi||Jakub Ondroušek||China||Czech Republic||Japan|
|2012||Kraljevica||Croatia||Jan Mrozowski||Kota Morinishi||Hideaki Jo||Japan||Czech Republic||China|
|2011||Eger||Hungary||Thomas Snyder||Kota Morinishi||Tiit Vunk||Germany||Czech Republic||United States|
|2010||Philadelphia||United States||Jan Mrozowski||Jakub Ondroušek||Hideaki Jo||Germany||Czech Republic||Japan|
|2009||Žilina||Slovakia||Jan Mrozowski||Branko Ceranic||Robert Babilon||Slovakia||Czech Republic||Serbia|
|2008||Goa||India||Thomas Snyder||Yuhei Kusui||Jakub Ondroušek||Czech Republic||Japan||Germany|
|2007||Prague||Czech Republic||Thomas Snyder||Yuhei Kusui||Peter Hudak||Japan||United States||Czech Republic|
|2006||Lucca||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|
|2018||Prague||Czech Republic||Ming Letian||Dai Tantan||Chen Shiyu||Michael Smit||Mark Goodliffe||Taro Arimatsu|
|2017||Bangalore||India||Dai Tantan||Hu Yuxuan||Ming Letian||David McNeill||Mark Goodliffe||Michael Smit|
|2016||Senec||Slovakia||Qiu Yanzhe||Chen Shiyu||Sun Cheran||Zoran Tanasic||Mark Goodliffe||Taro Arimatsu|
|2015||Sofia||Bulgaria||Sun Cheran||Dai Tantan||Chen Nuo||David McNeill||Mark Goodliffe||Zoran Tanasic|
|2014||London||United Kingdom||Dai Tantan||Jin Ce||Sun Cheran||David McNeill||Jiri Hrdina||Stefano Forcolin|
|2013||Beijing||China||Jin Ce||Sun Cheran||Qiu Yanzhe||Henning Karlsgaard Poulsen||Liang Yue||Stefano Forcolin|
- "WPF Members". World Puzzle Federation. Retrieved 16 November 2018.
|Wikimedia Commons has media related to World Sudoku Championship.|
- Official web site of the World Puzzle Federation
- 2015: Official web site of the 10th WSC and 24th WPC
- 2014: Official web site of the 9th WSC and 23rd WPC
- 2013: Official web site of the 8th WSC and 22nd WPC
- 2012: Official web site of the 7th WSC and 21st WPC
- 2011: Official web site of the 6th WSC and 20th WPC
- 2010: 5th WSC April 29-May 2, 2010 Philadelphia, United States
- 4th WSC April 24–27, 2009 Žilina, Slovakia
- 2008: 3rd WSC Goa, India
- 2007: 2nd WSC Prague, Czech Republic
- 2006: 1st WSC Lucca, Italy
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