Killer Sudoku by Serkan Yürekli
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Theme: Even Surrounded
Author/Opus: This is the 367th puzzle from our managing editor Serkan Yürekli.
Rules: Standard Sudoku rules, using the digits 1-6. 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: 1.5 stars
Time Standards (highlight to view): Grandmaster = 1:00, Master = 1:30, Expert = 3:00
Solution: PDF and solving video.
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.