or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between Sudoku number entry mode and a shading mode to manage the shape inventory.)
Author/Opus: This is the 374th puzzle from our managing editor Serkan Yürekli.
Rules: Standard Shape Sudoku rules.
Difficulty: 1.5 stars
Time Standards (highlight to view): Grandmaster = 1:15, Master = 1:45, Expert = 3:30