Killer Sudoku by Serkan Yürekli
or solve online (using our beta test of Penpa-Edit tools)
Theme: T is for Toplama (Toplama = Addition in Turkish)
Author/Opus: This is the 57th 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 the cage. Digits cannot repeat inside a cage.
Answer String: Enter the 5th row from left to right, followed by a comma, followed by the 9th row from left to right.
Time Standards (highlight to view): Grandmaster = 10:00, Master = 16:00, Expert = 32:00
Solution: PDF; a solution video is available here.
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.
This was very hard, especially the key step 2/3 of the ways through the puzzle, where lbh unir gb erfbyir gur gjryir naq guvegrra va ebjf guerr naq sbhe.
20:47.Amazing Puzzle!I wonder how long the author took to create this.It was just so perfect.Very narrow solving path.A great sudoku to end the week.
A satisfying challenge. Obviously there are a lot of sticking points throughout, but the breakthrough that really got everything moving for me was when the cbvagvat anxrq cnve va gur gbc ebj urycrq cva qbja gur qvtvgf va gur ryrira pntr va gur hccre evtug.