Sudoku Competitions
Sudoku is more than just a solitary pastime. Major international competitions are held annually, with top players completing standard puzzles in just a few minutes.
World Sudoku Championship (WSC)
The world's premier Sudoku competition, held annually. It features written rounds, team competitions, and a final playoff round. Puzzles include both standard Sudoku and a variety of popular variants. Players from Japan, China, the Czech Republic, and the United States consistently rank at the top. Check the official WSC website for the latest venue and registration details.
How to Prepare for Competition
Master 12+ solving techniques from basic to advanced — from Naked Single to X-Wing, Swordfish, and beyond.
Practice speed — gradually reduce solving time while maintaining accuracy. Aim for 5 minutes on beginner puzzles and 15 minutes on intermediate puzzles.
Learn Sudoku variants — competitions often feature diagonal Sudoku, odd/even Sudoku, killer Sudoku, and more. Familiarity with common variant rules is essential.
Warm up with online contests — Grandmaster Puzzles and Discord communities host regular online competitions.
Online Competitive Platforms
Beyond offline tournaments, Sudoku thrives online. Platforms like Sudoku.com and Sudoku Coach offer rankings and timing features. Hone your speed on this site first — select "Expert" or "Master" difficulty, turn on the timer, and challenge your limits.