This is the archive of the old posts from Djape .Net, more or less as they used to be. Please go to to see the new website.

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!)

Frame Sudoku book

To see the solution to this puzzle click here

Sum Frame Sudoku – difficulty BRAIN

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

Loco Sudoku Puzzle Book Cuckoo Wacky Quirky

To see the solution to this puzzle click here
This entry was posted in Free sample puzzles, Killer Sudoku, Sudoku Variants and tagged , . Bookmark the permalink. Post a comment or leave a trackback: Trackback URL.


  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. 🙂

4 Trackbacks

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