Killer Sudoku, Difficulty 3

Puzzle 5020 Mar 7 March 2012
Puzzle 5030 Mar 9 March 2012
Puzzle 5040 Mar 11 March 2012
Puzzle 5050 Mar 13 March 2012
Puzzle 5060 Mar 15 March 2012
Puzzle 5070 Mar 17 March 2012
Puzzle 5080 Mar 19 March 2012
Puzzle 5090 Mar 21 March 2012
Puzzle 5100 Mar 23 March 2012
Puzzle 5110 Mar 25 March 2012
Daily Killer Sudoku