Thermo-Sudoku by Thomas Snyder
[This is a repost from our archives with new notes at the top (original post here): Symmetrically marked cells are one of the easier themes to achieve with Thermo-Sudoku, and in this puzzle the double zeroes highlight a few different kinds of logic to get to the unique solution.]
or solve online (using our beta test of Penpa-Edit tools)
Theme: Double Zeroes
Rules: Standard Thermo-Sudoku rules.
Estimated Difficulty*: 2 stars
Time Standards (highlight to view): Grandmaster = 2:15, Master = 3:30, Expert = 7:00
Solution: PDF
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 in Masterpiece Sudoku Mix 2.
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* This article was originally published here
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