Killer Sudoku, Difficulty 3

Puzzle 679 Aug 12 August 2009
Puzzle 685 Aug 14 August 2009
Puzzle 688 Aug 15 August 2009
Puzzle 691 Aug 16 August 2009
Puzzle 694 Aug 17 August 2009
Puzzle 697 Aug 18 August 2009
Puzzle 700 Aug 19 August 2009
Puzzle 703 Aug 20 August 2009
Puzzle 709 Aug 22 August 2009
Puzzle 712 Aug 23 August 2009
Daily Killer Sudoku