Jana Tylova, a Czech accountant, has beaten players from 21 other countries to win the inaugural world Sudoku championships. The story is here. There is no difference between men and women and I tried to prove that even in logic, men and women are on the same level," she said.
Sudoku is a logic based placement puzzle, where a 9x9 grid is filled up with numbers from 1 to 9 in such a way that each column and row contains each of the number from 1 to 9. Each Sudoku has a unique solution that can be reached logically without guessing.