One of the most popular variants of Sudoku, which adds clues based on the addition of values in group of cells (
Daily Killer Sudoku
Daily killer and greater-than killer sudoku puzzles that can be played online or printed.
Daily printable Killer Sudoku
One printable Killer Sudoku every day.
Comprehensive site with Killer Sudoku puzzles, variants, and solving strategies.
Two new Killer Sudoku puzzles every day, solvable online.
Killer Sudoku Online
Two new killer sudokus each day, solvable online. Also two "greater than" sudoku puzzles, and a "greater than" killer sudoku.
Killer Sudoku Puzzles by Krazydad
Many free printable Killer Sudoku puzzles.
Killer Sudoku Solver
A daily online Killer Sudoku puzzle, as well as a step-by-step online solver with strategy descriptions.
Last update:October 25, 2016 at 12:25:12 UTC