World Sudoku+Puzzle Convention 2021


What is the World Sudoku+Puzzle Convention 2021?

WS+PC is an online event organized to fill the gap after the postponed World Sudoku and Puzzle Championship.

When will the WS+PC take place?

The event starts on the 12th of November and ends on the 21st of November 2021.

Where will be the WS+PC held?

The competitive part will be held at the LMI website – Some of the side events will be held at different platforms like Zoom or Kahoot.

How to register for the WS+PC?

The registration is free and the process consists of two steps. 1) Make sure you are registered at the LMI website. Log in here or register here. 2) Fill in the online registration form that will be released in a few days.

What is the structure of the WS+PC?

The event will consist of a competitive part and various side events like panel discussions, lectures, trivia quizzes and fun puzzle contests.

The competitive part is similar to the World Sudoku Championship format with 8-10 independent rounds for sudoku and puzzles. This part will be open for the whole ten days and you may start the rounds whenever you want and in any order. The solver with the highest score from these individual rounds will be determined the winner.

The tentative schedule will be released soon. The Instruction booklet will be published one week before the competition.

Will the winners be declared the world champions?

No. The competitive part of the WS+PC is an unofficial contest with no ambition to replace the annual World Sudoku and Puzzle Championships.

Are there any prizes for the winners?

Yes. The most successful competitors, game-winners and, some others will be awarded small prizes and gift items.

Will online solving tools be available during the competition?

Not in the competitive part of the WS+PC. The puzzles will be released in PDF format, and it is expected that participants will print out the documents, solve the sudokus/puzzles on paper, and then submit their answers at the competition website. However, online solving will be enabled for most of the side events. We will indicate in advance which contests are available online.

Are there any participation fees?

The WS+PC is free of charge, but the organizers and authors will be glad for your donations.

Who are the organizers of the WS+PC?

The event is organized by the WPF in association with the LMI and a few volunteers, namely Tantan Dai, Anthea McMillan, Yanzhe Qiu, Prasanna Seshadri, Tawan Sunathvanichkul, and many others.

How to contact the organizers?

If you have any more questions feel free to ask us at the forum on the LMI website or via email at