Killer Sudoku, Difficulty 3

Puzzle 6372 Dec 1 December 2012
Puzzle 6382 Dec 3 December 2012
Puzzle 6392 Dec 5 December 2012
Puzzle 6402 Dec 7 December 2012
Puzzle 6412 Dec 9 December 2012
Puzzle 6422 Dec 11 December 2012
Puzzle 6432 Dec 13 December 2012
Puzzle 6442 Dec 15 December 2012
Puzzle 6452 Dec 17 December 2012
Puzzle 6462 Dec 19 December 2012
Daily Killer Sudoku