Killer Sudoku, Difficulty 10

Puzzle 842 Oct 5 October 2009
Puzzle 848 Oct 7 October 2009
Puzzle 857 Oct 10 October 2009
Puzzle 863 Oct 12 October 2009
Puzzle 887 Oct 20 October 2009
Puzzle 911 Oct 28 October 2009
Puzzle 935 Nov 5 November 2009
Puzzle 941 Nov 7 November 2009
Puzzle 956 Nov 12 November 2009
Puzzle 959 Nov 13 November 2009
Daily Killer Sudoku