or solve online (using our beta test of Penpa-Edit tools)
Author/Opus: This is the 409th puzzle from Thomas Snyder, aka Dr. Sudoku.
Rules: Standard Thermo-Sudoku rules.
Difficulty: 4.5 stars
Time Standards (highlight to view): Grandmaster = 10:00, Master = 17:30, Expert = 35:00
Solution: PDF; a solution video from the Cracking the Cryptic team is available here. Thomas may come back to write a “how this was made” type video in the coming weeks but the CtC solve captures most of the intended logic.
Note: Follow this link for more Thermo-Sudoku puzzles. If you are new to this puzzle type, here are our easiest Thermo-Sudoku to get started on. More Thermo-Sudoku puzzles can be found in The Art of Sudoku 2 and Masterpiece Sudoku Mix 2.