Killer Sudoku, Difficulty 3

Puzzle 9403 Jul 30 July 2014
Puzzle 9418 Aug 2 August 2014
Puzzle 9428 Aug 4 August 2014
Puzzle 9438 Aug 6 August 2014
Puzzle 9448 Aug 8 August 2014
Puzzle 9458 Aug 10 August 2014
Puzzle 9468 Aug 12 August 2014
Puzzle 9478 Aug 14 August 2014
Puzzle 9488 Aug 16 August 2014
Puzzle 9498 Aug 18 August 2014
Daily Killer Sudoku