1)   Killer Sudoku or Sum Sudoku 0.1
Play the japanese puzzle game killer sudoku / sum sudku in your windows computers. Includes 30 free killer sudoku puzzles. Killer sudoku puzzles are more challenging than normal sudoku puzzles. Its a blend of kakuro and sudoku.
Killer Sudoku, Sum Sudoku, sumsudoku, tougch sudoku, expert, hard, challenging, su-do-ku, kakuro and sudoku.,