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