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Author/Opus: This is the 331st puzzle from our managing editor Serkan Yürekli.
Rules: Fill all empty hexes with digits from 1-9 so that all number clues (in white) indicate the sum of the digits in that direction. Digits cannot repeat in any entry (i.e., any group of hexes connected either horizontally or in one of the two diagonal directions, without any black cells separating them). This no repeat rule applies even for unclued entries.
Difficulty: 1 star
Time Standards (highlight to view): Grandmaster = 0:40, Master = 1:15, Expert = 2:30