Most wins of the World Sudoku Championship (individual)

The most wins of the World Sudoku Championship is four, by Kota Morinishi (Japan) in 2014–15 and 2017–18.

The global puzzling competition, organized under the auspices of the World Puzzle Federation, has been held annually (except for 2020) since 2006. Morinishi has won four of the 14 events, and with three wins each, Thomas Snyder of the USA (2007, 2008 and 2011) and Jan Mrozowski of Poland (2009, 2010 and 2012) are in joint second place.

On his first appearance at the World Sudoku Championship in Philadelphia, USA, in 2010, Morinishi finished in 25th place, but this inspired him to up his game and master "Number Place", as it was originally called. (The more popular name "Sudoku" comes from the Japanese "Sūji wa dokushin ni kagiru”, meaning “the digits are limited to one occurrence".) In the following three years (at Eger in Hungary, Kraljevica in Croatia, and Beijing in China), Morinishi placed second, before finally winning his first event in London, UK, in 2014.