or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between Sudoku = big digits and Number candidate = small entries in the corners of cells.)
Theme: Clue Symmetry and Logic
Author/Opus: This is the 136th puzzle from our contributing puzzlemaster Serkan Yürekli.
Rules: Standard Tight Fit Sudoku rules with digits from 1-9. Also, there are some dotted cages; the number clues given with these cages indicate the sum of all digits in the cage. Digits cannot repeat within a given cage.
Answer String: Enter the 6th row from left to right, followed by a comma, followed by the 6th column from top to bottom. (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 = 5:30, Master = 9:30, Expert = 19:00
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 and in The Art of Sudoku 2.