5 Palace grid, 3 kinds of difficulty, so you play addictive Sudoku!
The rules of the game is simple, there are a number of figures in the grid, the other house blank, according to the logic of deduction out what the rest of the space is the number, making the grid of each line and each column has 1 to 9 numbers, each Small Jiugong Gerry also has 1 to 9 numbers, and a number in each ranks and each small Jiugong Gerry can only appear once.