### Thermo-Sudoku by Thomas Snyder

PDF

or solve online (using our beta test of Penpa-Edit tools)

Theme: Jack-O’-Lantern

Author/Opus: This is the 202nd puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Standard Thermo-Sudoku rules.

Answer String: Enter the 3rd row from left to right, followed by a comma, followed by the 4th row from left to right.

Time Standards (highlight to view): Grandmaster = 10:00, Master = 25:00, Expert = 50:00

Solution: PDF; a solution video is available here.

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.

• skynet says:

16:16.I am surprised to see the GM and master times a bit on the higher side.This 16:16 despite breaking the puzzle in the beginning of the solve after squandering a great and pacy start.
A lovely,fun filled and enjoyable sudoku!

• John B says:

Well-planned. I think Tom likes everyone spending an average of an hour on these. Worked to find a very subtle break-in before writing the first digits, finally got a suitable deduction that placed several of one digit (I’ll tell youit was either 1 or 9), and then got to continue wrestling until the answer keys were done. Probably the hardest smileyface yet.

• Naama says:

I find that the solution is not unique. There are 2 of them possible. Can’t find what did I miss…
Help?

• drsudoku says:

There is just the one solution, but without sharing your partial solutions it is very hard to tell you what you have wrong.

• Naama says:

I’m sure there is only one. That’s why I’m puzzled…
Can I attach a file to my comment here? I can scan the almost solved one…

• drsudoku says:

You can link to a file hosted elsewhere but not upload your own image.

Feel free to also just type out your suspected grid with * for unsure cells. I can hide the numbers behind a white color tag so it won’t be seen as a spoiler.

• Naama says:

Thanks!

• drsudoku says:

Check your values in row 7 column 8 and row 8 column 7. You’re repeating a 6 and 7 in those rows.

• Naama says:

Oh dear! I did!
Thanks!
I guess it means starting over for the third time… 🙂 (I’m not giving up).

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