Killer Sudoku, Difficulty 3

Puzzle 5710 Jul 23 July 2012
Puzzle 5720 Jul 25 July 2012
Puzzle 5730 Jul 27 July 2012
Puzzle 5740 Jul 29 July 2012
Puzzle 5749 Jul 31 July 2012
Puzzle 5754 Aug 1 August 2012
Puzzle 5764 Aug 3 August 2012
Puzzle 5774 Aug 5 August 2012
Puzzle 5784 Aug 7 August 2012
Puzzle 5794 Aug 9 August 2012
Daily Killer Sudoku