Killer Sudoku, Difficulty 3

Puzzle 3238 Apr 3 April 2011
Puzzle 3243 Apr 4 April 2011
Puzzle 3248 Apr 5 April 2011
Puzzle 3253 Apr 6 April 2011
Puzzle 3258 Apr 7 April 2011
Puzzle 3263 Apr 8 April 2011
Puzzle 3273 Apr 10 April 2011
Puzzle 3278 Apr 11 April 2011
Puzzle 3283 Apr 12 April 2011
Puzzle 3288 Apr 13 April 2011
Daily Killer Sudoku