Killer Sudoku, Difficulty 7

Puzzle 17230 Oct 16 October 2018
Puzzle 17300 Oct 30 October 2018
Puzzle 17315 Nov 2 November 2018
Puzzle 17385 Nov 16 November 2018
Puzzle 17495 Dec 8 December 2018
Puzzle 17555 Dec 20 December 2018
Puzzle 17575 Dec 24 December 2018
Puzzle 17585 Dec 26 December 2018
Puzzle 17620 Jan 2 January 2019
Puzzle 17835 Feb 14 February 2019
Daily Killer Sudoku