How good are you at Sudoku? You can find out on this time based version without turning over an hour glass. If you have not played Sudoku before, you must be start playing. It's very simple and highly addictive. Place the numbers 1 to 9 in the grids so they only appear once in each row, column and 3X3 domain. No mathematics. Just use logic. Sudoku Countdown is Sudoku with a clock counting down your score. You start with 10,000 points which runs down like a timer once the game begins. The faster you solve the puzzle, the higher your score. If you cannot solve the puzzle in the allocated time, then you score zero points. Fair enough. Overall, these puzzles are fairly easy so it should not be a problem to solve them before time runs out. With the element of time-based points, Sudoku Countdown adds a subtle undercurrent of calm electricity to a game which is fast gaining in popularity all over the world. Test yourself. Play Sudoku Countdown to see how good a Sudoku player you are, under pressure. Challenge your friends and family. What's your score? The countdown begins...