Killer Sudoku, Difficulty 7

Puzzle 15154 Sep 14 September 2017
Puzzle 15164 Sep 16 September 2017
Puzzle 15184 Sep 20 September 2017
Puzzle 15264 Oct 6 October 2017
Puzzle 15284 Oct 10 October 2017
Puzzle 15304 Oct 14 October 2017
Puzzle 15334 Oct 20 October 2017
Puzzle 15354 Oct 24 October 2017
Puzzle 15374 Oct 28 October 2017
Puzzle 15409 Nov 4 November 2017
Daily Killer Sudoku