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or solve online (using our beta test of Penpa-Edit tools; note that the dotted circles are just for answer entry and are where the number should be placed in the 2×2 cell. An alternate option with centralized digit entry is here.)
Author/Opus: This is the 97th puzzle from our contributing puzzlemaster Serkan Yürekli.
Rules: Variation of Kakuro: Enter a single digit from 1 to 9 into each cell so that the sum of digits in each Across entry equals the value given to the left of the entry, and the sum of digits in each Down entry equals the value given above the entry. The gray (2×2) cells are to be filled by a single digit which sits in multiple rows and columns. No digit may be repeated within a single entry, regardless of if it is in a small or large cell.
Answer String: Enter the values in each cell in the marked rows from left to right, separating the rows with a comma. Ignore black cells.
Time Standards (highlight to view): Grandmaster = 13:00, Master = 22:30, Expert = 45:00
Note: Follow this link for other Kakuro puzzles.