Killer Sudoku Puzzles
My Killer Sudoku puzzles are collected in 100 printable booklets per volume. Within each volume, the puzzles are also ordered by ascending difficulty (book 100 is harder than book 1, but book 1 volume 9 is about the same as book 1, volume 1). Each booklet contains eight puzzles, instructions, and answers.
Want to save some trees? Try the online version of these puzzles.
Need a cheat sheet? Print out this one-sheet of candidate cage sets which makes it easier to eliminate numbers.
Select a difficulty level:
Intermediate Volume 1
Intermediate Volume 2
Intermediate Volume 3
Intermediate Volume 4
Intermediate Volume 5
Intermediate Volume 6
Intermediate Volume 7
Intermediate Volume 8
Intermediate Volume 9
Insane Volume 1
How to use the hintsMy puzzles contain a page of hints in addition to a page of answers.
The hints are puzzles grids that contain numbers showing the order in which the squares were solved by the computer. Although this is not necessarily the order you would solve the puzzle, it's probably pretty close.
Follow the numbered squares in order 1,2,3,4,5... until you find a square you haven't solved yet. This square (or the one or two immediately after it) is a good candidate to solve next.