Killer Sudoku, Difficulty 3

Puzzle 4732 Jan 9 January 2012
Puzzle 4742 Jan 11 January 2012
Puzzle 4752 Jan 13 January 2012
Puzzle 4762 Jan 15 January 2012
Puzzle 4772 Jan 17 January 2012
Puzzle 4781 Jan 19 January 2012
Puzzle 4791 Jan 21 January 2012
Puzzle 4801 Jan 23 January 2012
Puzzle 4811 Jan 25 January 2012
Puzzle 4821 Jan 27 January 2012
Daily Killer Sudoku