Killer Sudoku, Difficulty 10

Puzzle 4412 Nov 5 November 2011
Puzzle 4422 Nov 7 November 2011
Puzzle 4432 Nov 9 November 2011
Puzzle 4442 Nov 11 November 2011
Puzzle 4447 Nov 12 November 2011
Puzzle 4452 Nov 13 November 2011
Puzzle 4462 Nov 15 November 2011
Puzzle 4472 Nov 17 November 2011
Puzzle 4482 Nov 19 November 2011
Puzzle 4492 Nov 21 November 2011
Daily Killer Sudoku