or solve online (using our beta test of Penpa-Edit tools; use tab to shift between number entry and shading modes.)
Theme: Stopped on the Way Back
Author/Opus: This is the 211th puzzle from our contributing puzzlemaster Prasanna Seshadri.
Rules: Place the digits 1-9 in some of the cells, so that no digit is repeated in any row or column. Numbers on the outside of the grid indicate the sums of adjacent digit groups in that row or column, in order. Each sum is separated by at least one unused cell. A ? can represent any sum of 1 or larger.
Difficulty: 4.5 stars
Time Standards (highlight to view): Grandmaster = 10:00, Master = 19:15, Expert = 38:30
Note: Follow this link for other Japanese Sums puzzles.