Killer Sudoku, Difficulty 10

Puzzle 11541 Sep 30 September 2015
Puzzle 11551 Oct 2 October 2015
Puzzle 11561 Oct 4 October 2015
Puzzle 11566 Oct 5 October 2015
Puzzle 11571 Oct 6 October 2015
Puzzle 11581 Oct 8 October 2015
Puzzle 11591 Oct 10 October 2015
Puzzle 11596 Oct 11 October 2015
Puzzle 11601 Oct 12 October 2015
Puzzle 11611 Oct 14 October 2015
Daily Killer Sudoku