### Tight Fit Sudoku (Even/Odd) by Serkan Yürekli

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Theme: In Memory of Florian Kirch (FK)

Author/Opus: This is the 278th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Standard Tight Fit Sudoku rules. Also, digits within a gray square must be even and digits within a gray circle must be odd. The range of this puzzle is 1-9.

Answer String: Enter the 1st row from left to right, followed by a comma, followed by the 6th row from left to right. (Note: for the tight fit cells, enter the top before the bottom as would be normal for the read order.)

Time Standards (highlight to view): Grandmaster = 2:45, Master = 5:45, Expert = 11:30

Solution: PDF

Note: Follow this link for other Tight Fit Sudoku puzzles on this website. If you are new to this puzzle type, here are our easiest Tight Fit Sudoku to get started on. More Tight Fit Sudoku can be found in our beginner-friendly collection Intro to GMPuzzles by Serkan Yürekli, in The Art of Sudoku 2, and in Masterpiece Sudoku Mix 5: Tight Fit Sudoku.

• Jackson Bross says:

I’m not always a fan of odd/even sudoku as it can devolve into two relatively disjoint puzzles. This one, on the other hand, was very satisfying, and kept the interplay between odd/even relevant throughout. Very nice.

• skynet says:

3:50

• Don’t understand the point of putting a comma after certain rows. Sorry to be dense, but can someone enlighten me?

Thanks

• drsudoku says:

It is a way we prefer to parse the answer for the solution checker, but it is not important for solving the puzzle so don’t worry too much about it.

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