Thermo-Sudoku by Zoltán Horváth

Thermo-Sudoku by Zoltán Horváth

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Theme: Tic-Tac-Toe

Author/Opus: This is the 7th puzzle from guest contributor Zoltán Horváth.

Rules: Standard Thermo-Sudoku rules.

Answer String: Enter the 3rd row from left to right, followed by a comma, followed by the 7th column from top to bottom.

Time Standards (highlight to view): Grandmaster = 4:15, Master = 6:45, Expert = 13:30

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.

Thermo-Sudoku by Serkan Yürekli

Thermo-Sudoku by Serkan Yürekli

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Theme: Spiral

Author/Opus: This is the 269th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Standard Thermo-Sudoku rules.

Answer String: Enter the 5th row from left to right, followed by a comma, followed by the 7th row from left to right.

Time Standards (highlight to view): Grandmaster = 4:45, Master = 6:00, Expert = 12:00

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.

Best of 2018: Sudoku Puzzles

Here are our best Sudoku puzzles of 2018, selected from the 42 web posts in this category:

Visually distinctive puzzles were an important part of the top Sudoku from 2018. While posted in our last week of 2018, this Christmas Tree Sudoku by Thomas Snyder (that combines Sudoku with the popular Star Battle style) got a lot of FAVE votes in a rather short time.

Star Battle Sudoku by Thomas Snyder

While we have been avoiding “Pi” puzzles for a long time here — some of us assert there is a more fundamental mathematical constant around 6.283 — having some new editors involved on the web led to our first full week of “Pi” puzzles in March and some others later in the year. Two Pi sudoku stood out including this Consecutive Sudoku from guest contributor Fatih Kamer Anda.

Consecutive Sudoku by Fatih Kamer Anda

Another prize goes out to an Arrow Sudoku from Murat Can Tonta.

Arrow Sudoku by Murat Can Tonta

The best sudoku of 2018 goes to another Pi-themed puzzle, a Thermo-Sudoku by Serkan Yürekli with an incredibly elegant arrangement of its givens that still leads to a fundamentally interesting logical solve.

Thermo-Sudoku by Serkan Yürekli

Thermo-Sudoku by Ashish Kumar

Thermo-Sudoku by Ashish Kumar

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Theme: Clueless

Author/Opus: This is the 6th puzzle from guest contributor Ashish Kumar.

Rules: Standard Thermo-Sudoku rules.

Answer String: Enter the 5th row from left to right, followed by a comma, followed by the 7th row from left to right.

Time Standards (highlight to view): Grandmaster = 7:00, Master = 13:30, Expert = 27:00

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.

Thermo-Sudoku by Kishore Kumar Sridharan

Thermo-Sudoku by Kishore Kumar Sridharan

PDF

Theme: Sun

Author/Opus: This is the 2nd puzzle from guest contributor Kishore Kumar Sridharan.

Rules: Standard Thermo-Sudoku rules.

Answer String: Enter the 1st column from top to bottom, followed by a comma, followed by the 4th column from top to bottom.

Time Standards (highlight to view): Grandmaster = 5:00, Master = 7:30, Expert = 15:00

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.

Thermo-Sudoku by John Bulten

Thermo-Sudoku by John Bulten

PDF

Theme: Candlepower

Author/Opus: This is the 53rd puzzle from our contributing puzzlemaster John Bulten.

Rules: Standard Thermo-Sudoku rules.

Answer String: Enter the 1st row from left to right, followed by a comma, followed by the 9th row from left to right.

Time Standards (highlight to view): Grandmaster = 5:30, Master = 11:00, Expert = 22:00

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.

Thermo-Sudoku by Serkan Yürekli

Thermo-Sudoku by Serkan Yürekli

PDF

Theme: Pi Circle in Order

Author/Opus: This is the 182nd puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Standard Thermo-Sudoku rules.

Answer String: Enter the 2nd row from left to right, followed by a comma, followed by the 4th row from left to right.

Time Standards (highlight to view): Grandmaster = 4:00, Master = 5:00, Expert = 10:00

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.