Killer Sudoku, Difficulty 7

Puzzle 15699 Dec 30 December 2017
Puzzle 15824 Jan 24 January 2018
Puzzle 15844 Jan 28 January 2018
Puzzle 15879 Feb 4 February 2018
Puzzle 15899 Feb 8 February 2018
Puzzle 15999 Feb 28 February 2018
Puzzle 16090 Mar 2 March 2018
Puzzle 16160 Mar 16 March 2018
Puzzle 16180 Mar 20 March 2018
Puzzle 16190 Mar 22 March 2018
Daily Killer Sudoku