Killer Sudoku by Serkan Yürekli
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Theme: Clue Symmetry and Logic
Author/Opus: This is the 73rd puzzle from our contributing puzzlemaster Serkan Yürekli.
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.
Answer String: Enter the 2nd row from left to right, followed by a comma, followed by the 9th row from left to right.
Time Standards (highlight to view): Grandmaster = 7:30, Master = 13:00, Expert = 26:00
Solution: PDF
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.
Very nice puzzle with an elegant (and I suspect fairly tight) solving path.
20:47.Hard and very nice
I wouldn’t mind seeing a walkthrough here — I feel like I missed some inferences all the way through.
Somehow i managed to break this puzzle twice… a really nice solving path though, and nice logical steps to be found, especially in the corners.
Laid great groundwork on this one. Using a very telling amount of time, I proved 6 times that it was impossible, if the 22 is miscopied as a 23. Then, deciding to try to solve it with a 23, made another long go to demonstrate it probably isn’t unique if numbers can repeat in a cage. With nonrepeats, and knowing virtually the whole solving path without the solution by then, I knocked it off in another 18:48.
Great puzzle! I especially like the geometry involved in the corner cages in the top left and bottom right. It took me a long time to understand how that worked and then the solve was quite smooth after that.