### Killer Sudoku by Grant Fikes

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or solve online (using our beta test of Penpa-Edit tools)

Theme: Stuck Z

Author/Opus: This is the 319th puzzle from our contributing puzzlemaster Grant Fikes.

Rules: Standard Sudoku rules. Also, the sum of the digits in each cage must equal the value given in the upper-left corner of that cage. Digits cannot repeat inside a cage.

Difficulty: 3.5 stars

Time Standards (highlight to view): Grandmaster = 4:00, Master = 6:15, Expert = 12:30

Solution: PDF; a solution video is also available here.

Note: Follow this link for more Killer Sudoku and this link for classic Sudoku. More Killer Sudoku puzzles can be found in Killer Sudoku by Serkan Yürekli.

• skynet says:

5:08.Enjoyable solve.

• Asher says:

I found this much easier than I expected from the star rating, and this is coming from someone who generally struggles with the harder puzzles on this site. I really enjoyed the solve – lots of fun principles.

• Jonah says:

Gotta say, I’m disappointed to see that Grant’s twitter is so much more toxic than it was six years ago. Instead of solving this one I’m donating to my local community bail fund.

• mathgrant says:

I have become aware of an organization with a Small Business Relief Fund to help rebuild small black-owned businesses in Chicago which have been decimated by rioters and looters: https://www.formyblock.org/

I don’t know if this will be enough to make you want to solve my puzzles again, but I have requested that all the money I would be owed for a puzzle ebook that’s currently in the works be donated to this organization’s Small Business Relief Fund. Have a nice day! 🙂

• mathgrant says:

This was meant as a reply to Jonah, but WordPress is confusing. Oh well.

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