Funny and challenging puzzle game; Pick it up just now, it\'\'s addictive! Sudoku lets you work better and study better! it is the most valued present in the 21st century for you! Get your own Sudoku right now! Features: 1) Three levels of difficulty 2) Many different level puzzles automatic generated 3) Automatic or hand operated power on/off 4) Sleep function: it will enter the sleep mode after 10 minutes without operation 5) Automatically check the answers and show the correct ones with a sound 6) With a unique design of cursor; the number of the question has the fixed cursor, which is convenient to be checked during the game; the flashing cursor shows the current position and it\'\'s easy to be moved 7) Large screen design of LCD 8) Contains 4 x 4, 6 x 6, 8 x 8 and 9 x 9 selections Outer packing: 80pcs/ctn Carton dimensions: 76.0 x 43.5 x 42.0cm N.W.: 17kg G.W.: 19kg