Killer Sudoku, Difficulty 3

Puzzle 3766 Jun 29 June 2011
Puzzle 3776 Jul 1 July 2011
Puzzle 3786 Jul 3 July 2011
Puzzle 3796 Jul 5 July 2011
Puzzle 3806 Jul 7 July 2011
Puzzle 3816 Jul 9 July 2011
Puzzle 3826 Jul 11 July 2011
Puzzle 3836 Jul 13 July 2011
Puzzle 3846 Jul 15 July 2011
Puzzle 3856 Jul 17 July 2011
Daily Killer Sudoku