Killer Sudoku, Difficulty 7

Puzzle 18710 Aug 8 August 2019
Puzzle 18975 Sep 30 September 2019
Puzzle 19075 Oct 20 October 2019
Puzzle 19125 Oct 30 October 2019
Puzzle 19170 Nov 8 November 2019
Puzzle 19280 Nov 30 November 2019
Puzzle 19410 Dec 26 December 2019
Puzzle 19445 Jan 2 January 2020
Puzzle 19485 Jan 10 January 2020
Puzzle 19730 Feb 28 February 2020
Daily Killer Sudoku