Killer Sudoku, Difficulty 3

Puzzle 3866 Jul 19 July 2011
Puzzle 3876 Jul 21 July 2011
Puzzle 3886 Jul 23 July 2011
Puzzle 3896 Jul 25 July 2011
Puzzle 3906 Jul 27 July 2011
Puzzle 3916 Jul 29 July 2011
Puzzle 3926 Jul 31 July 2011
Puzzle 3931 Aug 1 August 2011
Puzzle 3941 Aug 3 August 2011
Puzzle 3951 Aug 5 August 2011
Daily Killer Sudoku