Description Killer Sudoku:
Fill all the blocks with 1-9 according to the following rules:
1.The numbers in a row or column must not repeat
2.The numbers in each of the nine 3x3 groups must not repeat
3.The numbers in each red box must not repeat, and they must add up to the number shown in the red box
How to play:
Play Killer Sudoku with your arrow keys.