Killer Sudoku Online

08-03-2021 admin

Online Killer Sudoku Puzzles, from easy to hard, solvable online for points & printable. Killer Sudoku: Fill all the blocks with 1-9 according to the following rules: 1.The numbers in a row or column must not repeat 2.The numbers in each of the nine 3x3 groups must not repeat 3.The numbers in each red box must not repeat, and they must add up to the number shown in the red box. Killer Sudoku puzzle are much harder than normal Sudoku puzzles, you should be able to comfortably solve a difficult Sudoku puzzle before trying to solve a Killer Sudoku puzzle. This is a Killer Sudoku starting grid, the first thing you'll need notice is that there are no starting numbers! Free Killer Sudoku every day for your desktop, tablet, phone or to print! Interactive online play. Thousands of past puzzles to choose from.

Killer Sudoku (also called Sum Sudoku) are a kind of hybrid puzzle that combine the best features of Sudoku and Kakuro (cross-sum) puzzles.Like a regular Sudoku, the rows, columns and 3x3 blocks contain the digits 1 thru 9. In addition, the dotted lines indicate areas, called cages

, which also contain a set of non-repeating digits. If you add up the digits in a cage, you get the sum shown in its clue.

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.

My new series of Killer Sudoku books, available in 4-per-page and Large Print 1-per-page formats, are now available on Amazon.

A variety of skill levels are available. Your purchase (and Amazon review) helps support this website!

Select a difficulty level:

Free Killer Sudoku Online

These puzzles require basic Sudoku strategy and Kakuro strategy. If you have not solved Kakuro puzzles before, you will probably find them quite difficult at first.

Http://killersudokuonline.com

Volume 1 (1-per-page)(4-per-page)
Volume 2 (1-per-page)(4-per-page)
Volume 3 (1-per-page)(4-per-page)
Volume 4 (1-per-page)(4-per-page)
Volume 5 (1-per-page)(4-per-page)
Volume 6 (1-per-page)(4-per-page)
Volume 7 (1-per-page)(4-per-page)
Volume 8 (1-per-page)(4-per-page)
Volume 9 (1-per-page)(4-per-page)
Volume 10 (1-per-page)(4-per-page)
Volume 11 (1-per-page)(4-per-page)
Volume 12 (1-per-page)(4-per-page)
Volume 13 (1-per-page)(4-per-page)
Volume 14 (1-per-page)(4-per-page)
Volume 15 (1-per-page)(4-per-page)
Volume 16 (1-per-page)(4-per-page)
Volume 17 (1-per-page)(4-per-page)
Volume 18 (1-per-page)(4-per-page)
Volume 19 (1-per-page)(4-per-page)
Volume 20 (1-per-page)(4-per-page)

These puzzles require more sophisticated Sudoku strategy.

Tough puzzles require more advanced Sudoku strategy, such as X-Wing, XY-Wing and Swordfish.

These are the toughest Killer Sudokus I make, and may require a little trial-and-error to finish.