Click the grid to see a printable version of the puzzle. The object is to insert the numbers in the boxes to satisfy only one condition: each row, column and 3x3 box must contain the digits 1 through to 9 but only once. What could be easier than that? I hear you say...
Did you know? The 5th World Sudoku Championship was held in Philadelphia, USA (April 29-May 2, 2010). Jan Mrozowski from Poland successfully defended his world title in the individual competition while Germany won a separate team event. The puzzles were written by Thomas Snyder and Wei-Hwa Huang, both of whom are past US Sudoku champions.