Theme: All Clues are Different Clues (for Randy Rogers)
Author/Opus: This is the 162nd puzzle from our contributing puzzlemaster Serkan Yürekli.
Rules: Place the digits 1-7 (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. A ? can represent any sum 1 or larger.
Answer String: Enter the 2nd row from left to right, followed by a comma, followed by the 3rd row from left to right. Use a capital X for empty cells.
Time Standards (highlight to view): Grandmaster = 4:00, Master = 5:30, Expert = 11:00
Note: Follow this link for other less common Number Placement puzzles.