Kakuzu

"The Sudoku that lets us all play at once! Kakuzu lets you face other players on the same Sudoku grid. There is only one example of each number per line. per column and per square. At the start all the numbers are cleverly hidden with stones. Draw a number from the pouch to see which number you must find on the tray by removing one of the 81 stones. If you’re lucky, you can keep the stone and have another go. If you’re not, you give the stone to the next player and now it’s his turn to find the number. Try and collect the most stones by the end of the game. The key skills for Sudoku, logic, intuition and observation, are the ones needed to master Kakuzu! Contents: a wooden tray with drawer, 91 stones including 10 numbered ones, a cloth bag, 20 double-sided printed grids and a set of game rules Available in April 2010" -- from the Gigamic website