Killer Sudoku, Difficulty 3

Puzzle 15753 Jan 10 January 2018
Puzzle 15813 Jan 22 January 2018
Puzzle 15823 Jan 24 January 2018
Puzzle 15833 Jan 26 January 2018
Puzzle 15853 Jan 30 January 2018
Puzzle 15868 Feb 2 February 2018
Puzzle 15908 Feb 10 February 2018
Puzzle 15958 Feb 20 February 2018
Puzzle 15968 Feb 22 February 2018
Puzzle 15998 Feb 28 February 2018
Daily Killer Sudoku