World Junior Sudoku Championships 2025
Dear members, let us invite you to the 3rd World Junior Sudoku Championships, which will take place this August in China, near Beijing. Registration is open, you can sign up…
Puzzle Calendar 2025
We have updated the calendar with online and on-site puzzle competitions for the year 2025. The dates of the WPF GP series and the WSPC (in Eger, Hungary) are already…
Calendar of puzzle events released
Various people were looking for an overview of puzzles events during a year. Here you go 😁: Events > Calendar. If you are aware of some puzzle events, don't hesitate…
WPF Puzzle and Sudoku Ratings
In various sports exist some kind of ranking. One example is in tennis with the ATP world ranking, another one in chess with the FIDE world ranking using the Elo…