Killer Sudoku, Difficulty 3

Puzzle 715 Aug 24 August 2009
Puzzle 718 Aug 25 August 2009
Puzzle 721 Aug 26 August 2009
Puzzle 724 Aug 27 August 2009
Puzzle 727 Aug 28 August 2009
Puzzle 733 Aug 30 August 2009
Puzzle 736 Aug 31 August 2009
Puzzle 739 Sep 1 September 2009
Puzzle 742 Sep 2 September 2009
Puzzle 745 Sep 3 September 2009
Daily Killer Sudoku