Puzzle solvers from 35 countries gathered in Kolkata for the 19th World Sudoku and 33rd World Puzzle Championship 2026, hosted by Logic Masters India from October 11 to 18 at The Westin, Rajarhat. The week includes 38 rounds, over 100 Sudokus and 250 puzzles, cultural themes inspired by Indian epics, and events like Puzzle Palooza with international experts.
