Killer Sudoku, Difficulty 3

Puzzle 5215 Apr 15 April 2012
Puzzle 5225 Apr 17 April 2012
Puzzle 5235 Apr 19 April 2012
Puzzle 5245 Apr 21 April 2012
Puzzle 5255 Apr 23 April 2012
Puzzle 5265 Apr 25 April 2012
Puzzle 5275 Apr 27 April 2012
Puzzle 5285 Apr 29 April 2012
Puzzle 5295 May 1 May 2012
Puzzle 5305 May 3 May 2012
Daily Killer Sudoku