Jigsaw Sudoku by Thomas Snyder
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Theme: Downward Spiral
Author/Opus: This is the 429th puzzle from Thomas Snyder, aka Dr. Sudoku.
Rules: Standard Sudoku rules: Insert a number from 1 to 9 into each cell so that no number repeats in any row, column, or bold region.
Difficulty: 3 stars
Time Standards (highlight to view): Grandmaster = 4:15, Master = 5:45, Expert = 11:30
Solution: PDF and solving video.
Note: Follow this link for other classic Sudoku. If you are new to this puzzle type, here are our easiest Sudoku to get started on. More classic Sudoku puzzles can be found in The Art of Sudoku, The Art of Sudoku 2 and in our beginner-friendly collection Intro to GMPuzzles by Serkan Yürekli.