Killer Sudoku, Difficulty 3

Puzzle 5904 Aug 31 August 2012
Puzzle 5909 Sep 1 September 2012
Puzzle 5919 Sep 3 September 2012
Puzzle 5929 Sep 5 September 2012
Puzzle 5939 Sep 7 September 2012
Puzzle 5949 Sep 9 September 2012
Puzzle 5959 Sep 11 September 2012
Puzzle 5968 Sep 13 September 2012
Puzzle 5978 Sep 15 September 2012
Puzzle 5988 Sep 17 September 2012
Daily Killer Sudoku