### Japanese Sums by Serkan Yürekli

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between number entry and shading modes.)

**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 less common Number Placement puzzles.