Matrix Sudoku is a popular puzzle consisting of a grid of 9 by 9 numbers. Each grid number is in the range 1-9 which can only occur once in any row/column combination and the 3x3 square in which it resides. ('Sudoku' is a Japanese word that meaning "the numbers must be single", or "the numbers must occur only once". ) The goal of Sudoku is to fill all the blank squares in the grid with the correct numbers. In Matrix Sudoku, you can save /load games and print the puzzle. Matrix Sudoku also support the variant sudoku: Nonomino Sudoku, also known as geometric Sudoku. This variation m... [ read more about Matrix Sudoku >> ]