Frame Sudoku

A novelty for this site – Sum Frame Sudoku! 🙂

No, it’s not an Outside Sudoku. It’s more of a Killer Sudoku Variant: the numbers outside the grid tell you the sum of the 3 numbers closest to it. So, yes, in a way it is also similar to Outside Sudoku, but here you do have to process the sums of 3 numbers (always 3!), hence it is more a killer variant. The rest of the rules are standard Sudoku rules.

I guess that’s clear enough for the rules of Frame Sudoku. If not, please ask questions.

UPDATE: I decided to present you not one, but two frame sudoku puzzles! First one is EASY, the second one is BRAIN. 🙂 So enjoy!

Sum Frame Sudoku – difficulty EASY

(click to download or right-click to save the image)

I have been providing these puzzles for FREE since 2005. Please consider clicking this “Like” button

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sudoku variants and other puzzle books

To see the solution to this puzzle click here
PDF Version of this puzzle: Frame Sudoku Sums PDF EASY.

Sum Frame Sudoku – difficulty BRAIN

(click to download or right-click to save the image)

I have been providing these puzzles for FREE since 2005. Please consider clicking this “Like” button

Clicking it will help in keeping this website free.
THANK YOU!
🙂

sudoku variants books

To see the solution to this puzzle click here
PDF Version of this puzzle: Frame Sudoku Sums PDF BRAIN.

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2 Comments

  1. Donna Miller
    Posted March 4, 2014 at 2:12 pm | Permalink

    Your sum-frame puzzle looks intriguing, but why start us out with a BRAIN?

    I need to start with an easy/cool one!

    • Posted March 5, 2014 at 2:45 am | Permalink

      Donna, have you tried this one? I don’t think it’s too difficult… if you do, I will post an easier one. 🙂

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