World sudoku championship opens in Prague

The second world sudoku championships opened in Prague on Thursday with 140 entrants from 32 countries competing to become the top player of the popular numerical logic game, organisers said. Current world champion, 32-year-old Czech, Jana Tylova, said ahead of the competition that she expected a much tougher contest than in Italy last year, when she took the title ahead of 87 opponents from 22 countries. Sudoku fans worldwide have been invited to follow the tournament's progress on line on the website www.sudoku07.com. President Vaclav Klaus, a keen player, is expected to attend the finals on Saturday, organisers added.