Killer Sudoku, Difficulty 3

Puzzle 4355 Oct 25 October 2011
Puzzle 4365 Oct 27 October 2011
Puzzle 4375 Oct 29 October 2011
Puzzle 4385 Oct 31 October 2011
Puzzle 4390 Nov 1 November 2011
Puzzle 4400 Nov 3 November 2011
Puzzle 4410 Nov 5 November 2011
Puzzle 4420 Nov 7 November 2011
Puzzle 4430 Nov 9 November 2011
Puzzle 4440 Nov 11 November 2011
Daily Killer Sudoku