Japanese Sums by Serkan Yürekli
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Theme: Double Clues
Author/Opus: This is the 335th puzzle from our managing editor Serkan Yürekli.
Rules: Place the digits 1-6 (1-9 for the example) 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.
Difficulty: 3 stars
Time Standards (highlight to view): Grandmaster = 4:00, Master = 5:15, Expert = 10:30
Solution: PDF; a solution video is also available here.
Note: Follow this link for other Japanese Sums puzzles.
The ending of the middle of this one was pretty cool. I thought I had messed up at first because I thought there was no unique solution.