PDF

or solve online (using our beta test of Penpa-Edit tools)

Theme: Clue Symmetry and Logic (Note: this puzzle originally appeared in this year’s 24HPC. It is a bonus puzzle here but is harder than Monday difficulty)

Author/Opus: This is the 38th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Variation of Sudoku rules (no repeats in any rows, columns, or bold regions) with digits 1-8. 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 3rd row from left to right, followed by a comma, followed by the 8th row from left to right.

Time Standards (highlight to view): Grandmaster = 3:00, Master = 4:15, Expert = 8:30

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.