Since 2021, we have posted some extra difficult Sunday Stumpers, about once a month. These will be quite tough puzzles, but with a logical path to be found (and solution videos to help). This eighth Sunday Stumper of 2022 is a Shape Sudoku by Salih Alan with a “Multiplication” theme in each of the shapes; while it might be a touch easier at 4.5 stars than some of our other stumpers, we expect you’ll still enjoy figuring out the intended solving path.
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 16th puzzle from guest contributor Salih Alan.
Rules: Standard Sudoku rules. Also, there are some numbered shapes that must be put into the grid. Shapes can be rotated, but cannot be reflected.
Difficulty: 4.5 stars
Time Standards (highlight to view): Grandmaster = 9:00, Master = 15:00, Expert = 30:00