Killer Sudoku, Difficulty 3

Puzzle 2899 Jan 23 January 2011
Puzzle 2904 Jan 24 January 2011
Puzzle 2908 Jan 25 January 2011
Puzzle 2913 Jan 26 January 2011
Puzzle 2918 Jan 27 January 2011
Puzzle 2923 Jan 28 January 2011
Puzzle 2928 Jan 29 January 2011
Puzzle 2933 Jan 30 January 2011
Puzzle 2938 Jan 31 January 2011
Puzzle 2942 Feb 1 February 2011
Daily Killer Sudoku