Sudoku Kings

Sudoku is a famous puzzle board game, but now you can play a variation of Sudoku game. It's Sudoku Kings! In classic Sudoku game, you need finish the board with the numbers in range 1~9. But in Sudoku Kings, you need do it with the Kings. Put the Kings on the board with these conditions: - Only one King per row - Only one King per column - Only one King per land - Do not be close to other Kings Have fun with Sudoku Kings!